An epoch characterized by repeated glaciations.

Humans began domesticating plants and animals, making food production more reliable than foraging alone. Agriculture enabled permanent settlements, surplus storage, specialization, trade, and eventually cities and states.

Early farming communities built canals and water-control systems to direct river water onto fields. Irrigation turned seasonal floods into managed infrastructure, supporting denser populations and more predictable harvests.

The wheel and axle emerged as a foundational mechanical technology, first transforming pottery and then transport. It became a building block for carts, pulleys, gears, mills, clocks, and later machines.

Early writing systems emerged in places such as Mesopotamia and Egypt, allowing information to persist outside human memory. Writing made contracts, accounting, law, administration, literature, and cumulative technical knowledge far easier to preserve and transmit.

The Liangzhu culture developed one of China's most complex pre-dynastic societies in the Yangtze River Delta, with large settlements, elite burials, jade ritual objects, and sophisticated water-management works. It offers an important archaeological bridge between Neolithic village life and later state formation before the Xia.

Indus Valley cities such as Mohenjo-daro built planned streets, wells, drains, and household wastewater systems. Their urban sanitation shows large-scale coordination of public infrastructure thousands of years before modern municipal engineering.

Bronze combined copper with tin or other alloying elements to make harder and more durable tools, weapons, and fittings. Its production required mining, smelting, trade, and craft specialization across long supply chains.

Ironworking spread as furnaces and smithing techniques improved, eventually making strong tools and weapons more widely available than bronze. Scaled iron production changed agriculture, warfare, construction, and everyday material culture.

Glassmaking matured in the ancient Near East and Mediterranean world, producing vessels, beads, glazing, and later optical materials. It became an important materials technology for storage, trade, science, and eventually lenses.

The Archimedes' screw used a rotating helical surface inside a cylinder to lift water. It became a durable hydraulic machine for irrigation, drainage, mining, and moving liquids or granular materials.

Chinese metalworkers developed large-scale cast iron production centuries before it became common elsewhere. The ability to cast iron into tools, vessels, and machine parts supported agriculture, manufacturing, and infrastructure at a larger scale.

The wheelbarrow emerged in ancient China as a practical transport device for moving heavy loads with less labor. By placing weight over a central wheel, it improved the efficiency of construction, farming, and military logistics.

Hellenistic geared mechanisms such as the Antikythera mechanism showed that ancient engineers could build devices for astronomical calculation. These machines are early examples of mechanical computation and precision gear trains.

Han dynasty diplomacy and trade missions helped connect China with Central Asia, forming the routes later known as the Silk Road. The network moved silk, horses, paper, glassware, religious ideas, scientific knowledge, and technical practices across Eurasia.

Cai Lun refined and documented a practical method for making paper from fibers such as bark, hemp, rags, and fishing nets. Affordable paper transformed recordkeeping, education, administration, and later the spread of printing.

Zhang Heng built an early seismoscope that could indicate the direction of distant earthquakes. It was a landmark in scientific instrumentation, translating subtle ground motion into a visible mechanical signal.

The decline and fall of the Western Roman Empire.

The legal maxim 'de minimis non curat lex' — the law does not concern itself with trifles — was formalized as part of Emperor Justinian I's Corpus Juris Civilis, a comprehensive codification of Roman law compiled under the direction of the jurist Tribonian. Rooted in earlier Roman legal tradition, the principle established that courts should not waste resources on trivial matters. It became a foundational doctrine in Western legal systems and, centuries later, was adopted into trade policy as the de minimis threshold — the value below which imported goods are exempt from duties and tariffs.

Kongō Gumi was founded in Osaka as a temple construction company, traditionally associated with the building of Shitennō-ji. Its survival across more than a millennium makes it a striking example of institutional continuity, craft knowledge transfer, and long-lived construction expertise.

Chinese artisans developed woodblock printing, carving entire pages into blocks that could reproduce texts and images repeatedly. The technique made books, religious texts, calendars, and administrative materials easier to duplicate at scale.

The Diamond Sutra was printed in China as a complete dated book, making it one of the clearest early landmarks in print history. It shows how mature woodblock printing had become centuries before movable metal type in Europe.

Chinese alchemists discovered gunpowder while experimenting with mixtures that included saltpeter, sulfur, and charcoal. The material reshaped warfare, mining, fireworks, signaling, and later civil engineering.

The Song dynasty issued paper money as a state-backed financial instrument. It was a major step in monetary technology, making large transactions easier than moving heavy strings of coins.

Bi Sheng invented movable type printing using individual reusable characters. Although Chinese writing limited its immediate efficiency, the idea of reusable type became one of the most important concepts in the history of print.

The Wujing Zongyao recorded formulas for gunpowder, giving historians a clear documentary anchor for the technology. The text connected chemical knowledge to military engineering and weapon design.

Chinese navigators adopted the magnetic compass for direction-finding at sea. Reliable navigation helped expand maritime trade, long-distance travel, and the exchange of goods and ideas across oceans.

Chinese kilns refined porcelain into a durable, translucent, high-fired ceramic prized across global trade routes. Porcelain combined materials science, heat control, craft specialization, and large-scale production.

Weight-driven mechanical clocks appeared in medieval Europe, turning timekeeping into a public, mechanical system. Their regular motion helped organize monasteries, towns, labor, navigation, astronomy, and later scientific measurement.

Eyeglasses emerged in Italy as corrective lenses for reading and close work. They extended productive working lives for scholars and craftspeople, while advancing the lens-making expertise that later made microscopes and telescopes possible.

Johannes Gutenberg developed a European printing system using movable metal type, oil-based ink, and a press adapted for repeated impressions. It dramatically lowered the cost of books and accelerated the spread of knowledge, religion, science, and politics.

Ship designs such as caravels and carracks combined stronger hulls, improved rigging, and navigational practice for long ocean voyages. These vessels helped connect Atlantic, Indian Ocean, and Pacific trade into increasingly global maritime networks.

Nicolaus Copernicus published De revolutionibus orbium coelestium, arguing that Earth and the planets orbit the Sun. The model challenged inherited cosmology and became a foundation for the Scientific Revolution.

Dutch spectacle makers developed early compound microscopes by combining lenses in a tube. The instrument opened a new scale of observation and helped lay the groundwork for microbiology, materials inspection, and experimental science.

William Gilbert published De Magnete, describing Earth itself as a magnet and helping explain compass behavior. The work strengthened the scientific basis of navigation and experimental physics.

The Dutch East India Company introduced the first-ever common stock on the Amsterdam Stock Exchange.

Thomas Newcomen invented the first practical steam engine.

In 1727, Benjamin Franklin founded the Junto Club, also known as the Leather Apron Club or the Mutual Improvement Club, in Philadelphia. The Junto was a group of like-minded individuals who gathered weekly to discuss and debate various topics ranging from philosophy and politics to business and community service. Comprised of tradesmen, artisans, and intellectuals, the Junto aimed to promote mutual improvement, civic responsibility, and social betterment. It served as a forum for exchanging ideas, networking, and initiating community projects. The Junto Club played a pivotal role in Franklin's personal and professional development, fostering his lifelong commitment to self-improvement, public service, and civic engagement.

James Hargreaves invented the Spinning Jenny, a multi-spindle spinning frame.

Alessandro Volta invented the voltaic pile, the first battery.

Richard Trevithick built the first full-scale working railway steam locomotive.

Charles Babbage, an English mathematician, conceptualised and designed the first mechanical computer, named the Difference Engine. This invention laid the groundwork for future developments in computing and information technology.

Joseph Nicéphore Niépce, a French inventor, took the first photograph, also known as a heliograph, in history. The photo, titled 'View from the Window at Le Gras', marked the beginning of photography, significantly influencing the way we capture and document our world today.

Samuel Morse and Alfred Vail developed the telegraph, a device capable of transmitting information over long distances using a series of dots and dashes. This revolutionised global communication, making it possible to send messages across continents and oceans almost instantaneously.

Samuel Morse invented Morse Code.

Large numbers of Chinese migrants, especially from Fujian, Guangdong, Hainan, and Chaozhou-speaking regions, moved to Southeast Asia through steamship routes, treaty-port networks, and colonial port economies. The movement known as 下南洋 helped form Chinese diaspora communities and business networks across Singapore, Malaya, Indonesia, Thailand, Vietnam, and the Philippines.

Dr. Crawford Long noticed that his friends felt no pain when they injured themselves while staggering around under the influence of ether. He immediately thought about its surgical possibilities and, on March 30, 1842, removed a tumor from the neck of a man who was under the influence of ether. This marked the first major use of anesthesia in surgery.

Charles Thurber developed the first practical typewriter, designed to aid the blind in writing. While not commercially successful, Thurber's machine laid the groundwork for future typewriter and keyboard designs.

Urbain Le Verrier and John Couch Adams independently predicted the existence of Neptune using mathematical calculations. The planet was then observed for the first time by Johann Gottfried Galle at the Berlin Observatory.

American dentist William T.G. Morton first publicly demonstrated the use of inhaled ether as a surgical anesthetic. This marked a major advancement in medical surgery, as it allowed for painless procedures and significantly increased the survival rate.

The Treaty of Peace, Friendship, Commerce and Navigation established a formal framework for diplomatic relations, trade, and maritime navigation. It reflected the growing importance of international commercial agreements during a period when steamships, telegraph networks, and global trade routes were reshaping long-distance exchange.

European-American settlers established the first permanent European-American settlement in the area that would become Seattle.

Sir William Henry Perkin accidentally discovered the first synthetic dye, known as 'mauveine' or 'Perkin’s mauve', while attempting to synthesize quinine for the treatment of malaria. This marked the beginning of the synthetic dye industry, dramatically transforming the world of fashion.

The first fossil of an early ancestor to humans, a Neanderthal, was discovered in the Neander Valley near Düsseldorf, Germany by limestone quarry workers. This significant discovery provided the first evidence of the existence of hominid species living before us, leading to important advancements in our understanding of human evolution.

Cyrus West Field and the Atlantic Telegraph Company completed the first transatlantic telegraph cable, enabling telecommunication between North America and Europe. This technological innovation significantly improved international communication, laying the groundwork for today's global interconnectedness.

Alfred Nobel patented dynamite, a safer and more manageable form of nitroglycerin. Dynamite revolutionized mining and construction industries, allowing for the efficient extraction of resources and the rapid development of infrastructure.

Marcus Goldman and Samuel Sachs founded Goldman Sachs.

Thomas Edison invented the mimeograph, a low-cost duplicating machine that works by forcing ink through a stencil onto paper. It revolutionized the way documents were copied, greatly enhancing productivity in offices and schools worldwide.

Alexander Graham Bell patented the telephone, a device that converts sound into electrical signals for transmission over distances, it was an important step in the development of communication technology. This invention revolutionized long-distance communication by allowing people to talk directly with each other across large distances.

Thomas Edison invented the phonograph.

David Edward Hughes invented the carbon microphone, an important early step in the development of telephone technology. The carbon microphone was the first practical microphone that could transmit clear and loud sound.

James Ritty, a saloon owner, invented the mechanical cash register to combat employee theft. The device, known as 'Ritty's Incorruptible Cashier', used clockwork mechanisms to ring a bell each time a sale was made, alerting the owner to transactions. It had a profound impact on retail business by improving transparency in financial transactions and paving the way for modern point of sale systems.

Invented by Alexander Graham Bell and his assistant Charles Sumner Tainter, the Photophone was a device that allowed for the transmission of sound on a beam of light. Although the practical applications of the Photophone were limited due to the lack of adequate technology at the time, it laid the foundation for future developments in fiber-optics communications.

Frank J. Sprague developed the trolley pole, a device used to transfer electricity from overhead lines to streetcars, effectively powering them. This invention facilitated the expansion of urban public transportation systems across the world, contributing greatly to the development of cities in the 20th century.

Ottmar Mergenthaler, a German inventor, developed the Linotype machine, a typesetting device that revolutionized the publishing industry. The machine cast an entire line of type at a time, dramatically increasing the speed of printing and making books and newspapers more accessible.

Lewis Edson Waterman, an American inventor, patented the first practical fountain pen in 1884. This invention provided a reliable and portable writing instrument, significantly enhancing the efficiency of written communication. Despite the rise of digital technologies, the fountain pen remains a symbol of elegance and refinement in the world of writing instruments.

George Eastman, founder of Eastman Kodak, developed the first practical photographic film. This invention revolutionized photography by making it accessible to the general public, thereby significantly influencing the evolution of visual communication.

John Kemp Starley invents the 'Safety Bicycle', a two-wheeler with equal-sized wheels and a proper chain drive. This innovation made cycling more popular and accessible, revolutionizing transportation and paving the way for the development of the modern bicycle.

In 1886, pharmacist John Stith Pemberton invented a carbonated beverage named Coca-Cola in Atlanta, Georgia. It quickly became popular and has since turned into one of the world's most recognizable brands, fundamentally changing the global beverage industry.

Emile Berliner, a German-American inventor, patented the Gramophone. This device played sound from flat discs rather than cylinders, improving sound quality and enabling mass production of recordings. It revolutionized the music industry and paved the way for modern phonographic technology.

A fire destroyed the central business district of Seattle.

The first Madison Square Garden opened.

In 1891, Carpenter Electric Heating Manufacturing Co invented the electric stove. This innovation made cooking safer and more efficient, as it eliminated the need for open flames and allowed for precise control over heating.

Almon Strowger, an undertaker, invented the Strowger switch, a device that enabled telephone exchanges to be automated. This invention marked the beginning of automatic telephony, reducing the need for operators and increasing the privacy and efficiency of telephone communication.

Nikola Tesla developed the Tesla Coil, a high-frequency transformer capable of generating very high voltages. This invention played a crucial role in the development of radio technology and wireless transmission of energy.

A serious economic depression in the United States.

Wilhelm Conrad Röntgen discovered X-rays while experimenting with cathode rays. This marked a milestone in the medical field as it allowed the internal structures of the human body to be examined non-invasively.

Rudolf Diesel, a German engineer, invented the diesel engine; a high-efficiency internal combustion engine. The invention provided a more energy-efficient alternative to gasoline engines and revolutionized the transportation and industrial sectors.

French physicist Henri Becquerel discovered radioactivity while working on phosphorescent materials. His discovery paved the way for further research in nuclear chemistry and the development of nuclear power.

Danish engineer Valdemar Poulsen invented magnetic recording. It was a significant breakthrough in the field of audio recording and paved the way for the development of modern audio technologies such as tapes, hard drives, and credit cards.

Guglielmo Marconi, an Italian inventor, successfully sent the first wireless telegraphy signals across the Atlantic Ocean. This invention paved the way for the development of modern wireless communication technologies such as radios, televisions, and mobile phones.

Willis Carrier invented modern air conditioning.

Orville and Wilbur Wright, also known as the Wright Brothers, achieved the first powered, sustained, and controlled airplane flight in Kitty Hawk, North Carolina. This marked a significant milestone in aviation history.

The Flatiron Building in New York City was completed, becoming an early icon of steel-frame skyscraper construction and dense urban design.

Lee De Forest created the Audion, the first triode vacuum tube, which could amplify electrical signals. It became a fundamental building block of radio, telephone, television, and early computer systems before the transistor era.

A major earthquake struck San Francisco.

Willem Einthoven, a Dutch physiologist, invented the first practical electrocardiograph. This device revolutionized cardiology, enabling doctors to diagnose heart conditions by detecting and recording the electrical activity of the heart.

Belgian-born American Leo Hendrik Baekeland invented the first synthetic plastic, Bakelite, marking the beginning of the global plastics industry. It was heat-resistant and could be molded into any shape, revolutionizing manufacturing and introducing an era of mass-produced consumer goods.

American inventor Alva J. Fisher patented the first electric washing machine, called the Thor. This device reduced the manual labor involved in washing clothes, contributing significantly to the modernization of household chores and paving the way for further advancements in home appliances.

Nathan B. Stubblefield, an American inventor, created the electrostatic loudspeaker. This device converted electrical signals into audible sound, a step forward in audio technology that led to the development of modern speakers and sound systems. It had a significant impact on the music, radio, and film industries by enhancing sound quality and volume.

Harry Brearley, a British metallurgist, accidentally discovered stainless steel while experimenting with steel alloys to resist corrosion. This breakthrough led to a revolution in the manufacturing industry, allowing for more durable, long-lasting products.

Arthur Wynne, a journalist from Liverpool, invented the first crossword puzzle for the New York World newspaper. This innovation quickly gained popularity and became a standard feature in newspapers, providing entertainment as well as a tool for improving vocabulary and mental agility.

A global war primarily involving Europe.

The concept of the tracer bullet, a bullet that leaves a visible trace of its trajectory, was invented.

Frederick Banting and Charles Best discovered insulin.

Frigidaire introduced the first electric refrigerator.

Walter Chrysler founded the Chrysler Corporation.

Otto Frederick Rohwedder, an American inventor, created the first automatic bread-slicing machine. This innovation not only revolutionized the baking industry but also led to the popular phrase 'the best thing since sliced bread', symbolizing a benchmark for great inventions.

Construction of the Empire State Building began. The Great Depression started.

The Empire State Building was completed. Vinyl was invented.

Construction of the Golden Gate Bridge began. Adolf Hitler became Chancellor of Germany.

Tsukiji Market, one of the largest wholesale fish and seafood markets in the world, opened in Tokyo, Japan.

Gerard K. O'Neill, an American physicist, proposed the concept of the O'Neill Cylinder, a space habitat designed for long-term human occupancy in outer space. This invention paved the way for future research and concepts in space colonization and extraterrestrial habitats.

Leo Goodwin Sr. and his wife Lillian founded the Government Employees Insurance Company (GEICO).

The Golden Gate Bridge was completed.

Hungarian-Argentine inventor László Bíró created the first commercial ballpoint pen. This pen, unlike its fountain predecessor, did not leak or require constant refilling, making writing more efficient and convenient. It became a staple in offices and schools worldwide.

A global war involving most of the world's nations.

The Manhattan Project, a research and development undertaking during World War II that produced the first nuclear weapons, began.

Conrad Hal Waddington coined the term epigenetics to describe how genes and developmental processes interact to produce an organism's traits. The idea later became central to understanding heritable changes in gene expression that do not alter the DNA sequence itself.

The United States produced the world’s first atomic bomb. Atomic bombs were dropped on the Japanese cities of Hiroshima and Nagasaki.

Hungarian-British physicist Dennis Gabor invented holography while working to improve the resolution of electron microscopes. His invention, which enables three-dimensional imaging, has significantly impacted various fields including medicine, art, and data storage.

American physicists John Bardeen, Walter H. Brattain, and William Shockley invented the transistor at Bell Laboratories. This small electronic device, which can amplify or switch electronic signals and electrical power, has become the fundamental building block of modern electronic devices, replacing vacuum tubes and paving the way for the miniaturization of technology.

Peter Carl Goldmark, working for Columbia Records, developed the Long Playing (LP) record, a vinyl record format for phonograph disc records. This invention greatly increased the duration of recorded sound, allowing for albums of music and greatly impacting the music industry.

Harry F. Olson, an American electrical engineer, invented the velocity microphone, also known as the ribbon microphone, while working at RCA. This microphone design became a critical component in the broadcasting and recording industry, enhancing the quality of audio transmission and playback.

The barcode was invented by Norman Joseph Woodland and Bernard Silver. It revolutionized the retail industry by speeding up the checkout process and enabling better inventory tracking.

Engineered by Swiss electrical engineer George de Mestral, Velcro was inspired by the way burrs clung to his dog's fur. This seemingly simple invention revolutionized various industries, including aerospace, medical, and fashion, due to its easy application and reusability.

Shin Kyuk-ho founded Lotte in Tokyo as a postwar chewing gum company. The business grew from confectionery into a major Japanese and South Korean conglomerate spanning food, retail, hotels, chemicals, logistics, construction, entertainment, and finance.

Diners Club, founded by Frank McNamara, Ralph Schneider, and Matty Simmons, introduced the first modern charge card. It changed how transactions were conducted and helped set the stage for consumer credit and cashless payments.

The Interstate Highway System construction began. Refrigeration technology improved significantly.

The Traitorous Eight, a group of engineers who left Shockley Semiconductor Laboratory, formed Fairchild Semiconductor. The Soviet Union launched Sputnik 1, the first artificial Earth satellite.

Jack Kilby invented the integrated circuit at Texas Instruments. This critical development paved the way for the miniaturization of electronics and the birth of the microelectronics industry.

Dee Hock was given 90 days to launch the BankAmericard card (which became the Visa card), starting from scratch. He did. In that period, he signed up more than 100,000 customers.

Jean Hoerni, one of the 'Fairchild Eight,' invented the Planar Process. This technique revolutionized semiconductor manufacturing by introducing a new method of mass-producing transistors, paving the way for the microelectronics age.

Belgian pharmacologist Paul Janssen, founder of Janssen Pharmaceuticals, developed fentanyl as a synthetic opioid anesthetic. It was initially considered a safer alternative to natural opioids and was widely used for pain management in medical settings. Over time, fentanyl and its analogs became key in surgical anesthesia and palliative care. However, illicitly manufactured fentanyl later contributed to a global opioid crisis due to its extreme potency and high risk of overdose.

NASA initiated the Apollo Program, which aimed to land humans on the Moon.

Nick Holonyak Jr., a consulting scientist at General Electric Company, invented the first practical light-emitting diode (LED). This innovation revolutionized the world of lighting by providing energy-efficient, long-lasting light sources that are now used in a wide range of applications from traffic lights to TV screens.

On October 1, 1964, the first Shinkansen, known as the 'Bullet Train,' was launched in Japan. This high-speed rail network initially connected Tokyo and Osaka, covering a distance of 515 kilometers. The Shinkansen revolutionized rail travel with its cutting-edge technology, including dedicated tracks, aerodynamically-designed trains, and advanced signaling systems. With maximum speeds reaching up to 210 km/h (130 mph) at the time of its launch, the Shinkansen significantly reduced travel time between major cities and set new standards for speed, efficiency, and safety in rail transportation. The success of the Shinkansen paved the way for the development of high-speed rail networks worldwide.

The first 20,000 miles of the Interstate Highway System were opened for driving.

The United States Apollo 11 mission landed the first humans on the Moon. Gore-Tex, a waterproof, breathable fabric, was invented by Wilbert L. Gore.

President Richard Nixon signed the National Environmental Policy Act (NEPA) on January 1, 1970, and later established the Environmental Protection Agency (EPA) by executive order. Building on Lady Bird Johnson's highway beautification efforts of the 1960s, Nixon's environmental agenda expanded federal beautification into a broader mandate — requiring environmental impact assessments for federal projects, regulating pollution, and setting national standards for air and water quality. The legislation marked a shift from voluntary beautification to enforceable environmental protection.

Intel introduced the first microprocessor. Ray Tomlinson sent the first network email. The United States abandoned the gold standard.

Intel Corporation introduced the first commercially available microprocessor, the Intel 4004, in 1971. Designed by Federico Faggin, Ted Hoff, and Stanley Mazor, it powered the first portable electronic calculators and paved the way for the microcomputer revolution.

The Apollo 17 mission was the last manned lunar landing mission.

Xerox introduced the first graphical user interface (GUI).

Hungarian architect Ernő Rubik invented the Rubik's Cube as a teaching tool to help his students understand three-dimensional problems. Not only did it become the world's best-selling toy, but it also sparked a global craze in the 1980s and continues to be widely used in mathematics and physics education.

Vint Cerf and Bob Kahn developed the TCP/IP protocol suite.

Steve Jobs, Steve Wozniak, and Ronald Wayne founded Apple Inc. Richard Dawkins coined the term ‘meme’ in his book ‘The Selfish Gene’.

Sol Price, a lawyer-turned-retailer, opened the first Price Club in a converted airplane hangar in San Diego, inventing the membership warehouse club model. The concept was radical: charge customers an annual fee for access to a no-frills warehouse stocked with limited selection at razor-thin margins, sold in bulk. Price had already pioneered discount retailing with FedMart in 1954, but Price Club took the idea further by stripping away virtually all retail overhead — no advertising, no decoration, no salespeople. The model proved so powerful that Sam Walton credited Price as his greatest inspiration when launching Sam's Club. Price Club merged with Costco in 1993, and the warehouse club format Sol Price invented now represents hundreds of billions in annual revenue worldwide.

The Revenue Act of 1978 included a provision allowing employees to defer compensation into retirement accounts.

Thomas Edison invented the incandescent light bulb.

Many Latin American countries faced severe debt crises. China implemented its one-child policy.

Ted Benna discovered a loophole in the Revenue Act of 1978, leading to the creation of the 401(k) retirement savings plan. Hakushu 1981 whisky was released by the Suntory distillery.

Motorola introduced the DynaTAC 8000X, the first commercially available handheld mobile phone.

The G5 nations signed the Plaza Accord at New York's Plaza Hotel, coordinating intervention to depreciate the U.S. dollar against the Japanese yen and German Deutsche Mark. The agreement became a landmark in international monetary coordination and reshaped trade, capital flows, and Japan's late-1980s asset boom.

Qualcomm was founded in San Diego by Irwin Jacobs and collaborators, building on digital communications research that later helped commercialize CDMA wireless systems. The company became a major force in mobile chipsets, modem technology, and the standards-driven economics of cellular networks.

Morris Chang founded Taiwan Semiconductor Manufacturing Company in Hsinchu, Taiwan, creating the dedicated pure-play semiconductor foundry model. By manufacturing chips designed by other companies, TSMC helped make fabless semiconductor companies possible and reshaped the global electronics supply chain.

The Berlin Wall fell, symbolizing the end of the Cold War. The Chinese government suppressed pro-democracy demonstrations in Tiananmen Square. The Loma Prieta earthquake struck the San Francisco Bay Area.

Japan faced a severe economic downturn due to a debt crisis.

A period of economic downturn in the United States.

Tim Berners-Lee invented the World Wide Web.

Henry Samueli and Henry Nicholas founded Broadcom to build communications semiconductors for broadband, networking, and connectivity. Its chips helped scale cable modems, Ethernet, Wi-Fi, Bluetooth, set-top boxes, and the networked devices that made consumer internet access feel ordinary.

The Japanese economy emerged from the debt crisis.

The Mosaic web browser was officially released. Ferruccio Lamborghini, founder of the luxury sports car brand Lamborghini, passed away.

Jensen Huang, Chris Malachowsky, and Curtis Priem founded NVIDIA to build graphics processors for personal computers. The company's GPU architecture later became a general-purpose engine for parallel computing, scientific simulation, machine learning, and modern AI systems.

Mosaic Communications Corporation was renamed Netscape Communications Corporation. Netscape released its Navigator web browser.

In 1994, the concept of internet cafes began to gain popularity, particularly in urban areas and tourist destinations. Internet cafes, also known as cybercafés, offered public access to computers connected to the internet for a fee, allowing individuals without personal computers or internet connections at home to browse the web, send emails, and engage in online activities. Internet cafes played a crucial role in bridging the digital divide and democratizing access to information and online communication. They served as social hubs where people could gather, work, socialize, and access digital resources. Internet cafes experienced a surge in popularity during the late 1990s and early 2000s before declining in prevalence with the widespread adoption of personal computers, home internet connections, and mobile devices.

Netscape Communications Corporation went public.

IBM's Deep Blue defeated Garry Kasparov in a chess match. Yahoo! Inc. went public.

Several Asian economies faced financial crises. Amazon.com, Inc. went public. Netflix, Inc. was founded.

Russia experienced a financial crisis. Larry Page and Sergey Brin founded Google. The Roth IRA was established.

The dot-com bubble saw rapid growth in internet-based companies and investments. Silicon Valley experienced a surge in technological innovation and investment.

The collapse of Long-Term Capital Management led to financial instability. The dot-com bubble burst, leading to a sharp decline in stock prices.

The September 11 attacks led to economic and geopolitical consequences. Apple Inc. introduced the iPod portable media player.

China joined the World Trade Organization on December 11, 2001, accelerating the modern hyper-globalization era. Its accession helped reorganize global supply chains around Chinese manufacturing capacity, multinational offshoring, container logistics, and export-led industrial scale.

The NASDAQ Composite index reached its lowest point since its peak during the dot-com bubble. PayPal Holdings, Inc. was acquired by eBay Inc.

Phil Jaber founded Philz Coffee, a specialty coffee retailer.

Mark Zuckerberg and his college roommates launched Facebook, Inc.

YouTube, LLC was founded. Section 409A, a provision of the Internal Revenue Code, was added to regulate deferred compensation.

Apple Inc. released the iPhone smartphone. The Great Recession began with the subprime mortgage crisis.

The financial crisis triggered by the subprime mortgage collapse led to a global recession. Tesla, Inc. began production of the Tesla Roadster, its first electric car model.

At Charlie Munger's urging, Berkshire Hathaway's MidAmerican Energy invested about $230 million for nearly 10% of BYD, then a Chinese battery, electronics, and emerging electric vehicle company. The investment became a landmark bet on battery manufacturing and the future scale of electric vehicles.

Bernard Madoff's Ponzi scheme collapsed, causing financial losses for investors. The Great Recession officially ended.

Apple Inc. released the iPad tablet computer.

BYD experimented with battery swapping for its e6 electric taxis in Shenzhen, including fleet operations with Pengcheng Taxi. The pilot showed an early path for keeping electric vehicles in commercial service without long charging stops, while also exposing the standardization and cost challenges that pushed BYD toward charging infrastructure.

Tesla, Inc. released the Model S electric sedan.

Twitter, Inc. went public with its initial public offering (IPO). U.S. retirement accounts reached a total of $27 trillion.

Li Ka-shing reorganized Cheung Kong Holdings and Hutchison Whampoa into CK Hutchison Holdings and CK Asset Holdings. CK Hutchison became a global infrastructure and operating conglomerate spanning ports, retail, telecommunications, energy, and infrastructure, showing how corporate structure can coordinate capital-intensive networks across countries.

Lee Sedol, a top professional Go player, announced his retirement, citing the increasing dominance of artificial intelligence (AI).

GitHub and OpenAI launched a technical preview of GitHub Copilot in June 2021, an AI pair programming tool powered by OpenAI's Codex model. Trained on billions of lines of public code, Copilot could suggest whole lines or blocks of code directly inside the editor. It became generally available in June 2022 and marked a turning point in software development — the first widely adopted AI coding assistant, reshaping how developers write code and accelerating the integration of large language models into everyday programming workflows.

OpenAI released ChatGPT on November 30, 2022, a conversational AI chatbot built on the GPT-3.5 language model. It reached 100 million users within two months of launch, making it the fastest-growing consumer application in history at the time. ChatGPT demonstrated that large language models could engage in coherent, wide-ranging dialogue — from writing essays and debugging code to explaining complex topics. Its viral adoption catalyzed an AI arms race among technology companies, sparked global debates about the future of work and education, and ushered in the era of mainstream generative AI.

Cursor, an AI-native code editor built by Anysphere, gained widespread adoption in 2024 as the first IDE designed from the ground up around large language models. Forked from VS Code, Cursor integrated AI deeply into the editing experience — offering inline code generation, multi-file edits, codebase-aware chat, and natural language commands that could refactor entire modules. It popularized the concept of the AI-native IDE, where the editor itself understands the full project context and developers collaborate with AI as a core part of their workflow rather than through bolted-on extensions.

The Bank of Japan (BOJ) ended its policy of negative interest rates.

Anthropic released Claude Code in February 2025, an agentic coding tool that operates directly in the developer's terminal. Unlike autocomplete-style assistants, Claude Code can autonomously navigate codebases, edit files, run commands, and manage git workflows — functioning as an AI software engineer rather than a suggestion engine. Built on Claude's large context window and tool-use capabilities, it represented a shift from AI-assisted coding to AI-agentic coding, where the model plans, executes, and iterates on multi-step engineering tasks with minimal human intervention.