1px = 5 Million Years

14 Billion BC - Universe forms

9 Billion BC - Milky Way galaxy forms

4.5 Billion BC - Earth forms

3.7 Billion BC - First life on Earth

2.4 Billion BC - Increase in atmospheric oxygen leads to multicellular life

500 Million BC - Cambrian Explosion, complex life forms, including most modern animals

1px = 500,000 Years

250 Million BC - Beginning of Triassic Period, Earth is a single land mass and dinosaurs begin to evolve

200 Million BC - Beginning of Jurassic Period, single land mass splits into two continents

150 Million BC - Beginning of Cretaceous Period, more continents split

66 Million BC - Beginning of Cenozoic Era, K-Pg exctinction event kills 3/4 of life on earth. Shortly after, first primates appear.

1px = 10,000 Years

3.3 Million BC - Beginning of Stone Age & Prehistory

2.5 Million BC - Earliest known humans

2 Million BC - Homo Erectus

1px = 1,000 Years

430,000 BC - Neanderthals

300,000 BC - Homo Sapien

1px = 100 Years

11,500 BC - Earliest humans enter North America

4,500 BC - The city of Sumer is founded in Ancient Mesopotamia

1px = 10 Years

3,300 BC - Beginning of Bronze Age

3,150 BC - Ancient Egypt is founded

3,100 BC - Pictographs, an early form of writing, is developed in Sumer

3,000 BC - Writing developed in Sumer and Egypt, beginning of Ancient History

2,550 BC - Pyramids of Giza are built in Ancient Egypt

2,334 BC - The Akkadian Empire is founded and rules Ancient Mesopotamia

2,300 BC - The city of Babylon is founded along the Euphrates river

2,154 BC - The Akkadian Empire collapses

2,100 BC - The Epic of Gilgamesh is written

2,070 BC - Yu the Great founds the Xia Dynasty, beginning of dynasties period in China

2,025 BC - The Assyrian Empire is founded and rules Ancient Mesopotamia

1,200 BC - Bronze Age Collapse & Beginning of Iron Age

776 BC - First Olympic Games in Ancient Greece

1px = 1 Year

626 BC - Founding of Neo-Babylonian Empire and end of Assyrian rule

550 BC - End of Iron Age & Founding of Persian Empire by Cyrus the Great

539 BC - Cyrus the Great conquers the Neo-Babylonian Empire

529 BC - Death of Cyrus the Great

525 BC - Cambyses II of Persia conquers Egypt

512 BC - Darius I of Persia conquers Thrace, Macedonia, and Libya

509 BC - Founding of the Roman Republic

508 BC - Democracy instituted at Athens

490 BC - Greek city-states defeat Persian invasion at Battle of Marathon

480 BC - Persian invasion of Greece by Xerxes

465 BC - Murder of Xerxes

449 BC - The Greco-Persian Wars end

336 BC - Wars of Alexander the Great begin

331 BC - Alexander the Great defeats Darius III to end the Persian Empire

323 BC - Death of Alexander the Great at Babylon

221 BC - Beginning of the Qin Dynasty and construction of the Great Wall of China

71 BC - Death of Spartacus, end of the Third Servile War in Roman Republic

51 BC - Queen Celopatra rules Egypt

44 BC - Julius Caesar murdered by Marcus Brutus

27 BC - End of Roman Republic, formation of Roman Empire

4 BC - Widely accepted date for birth of Jesus Christ

30 - Crucifixion of Jesus Christ

79 - Destruction of Pompeii by the volcano Vesuvius

285 - Roman Empire splits into Byzantine (Eastern) and Western Empires

330 - Constantinople becomes the capital of the Byzantine Empire

376 - Great Migration begins, non-Romans flee the Huns west, beginning of decline of Western Roman Empire

434 - Attila the Hun rises to power, begins frequent raids into Byzantine Empire

476 - End of Western Roman Empire and Ancient History, beginning of Middle Ages

570 - Muhammad is born

632 - Death of Muhammad, all of Arabia is under the religion of Islam

768 - Beginning of Charlemagne's reign

800 - Charlemagne is crowned Emperor of the new Holy Roman Empire

814 - Death of Charlemagne

1050 - Westminster Abbey is built

1095 - Pope Urban issues the Crusades to capture the Holy Land

1099 - First Crusade, Jerusalem is re-taken from the Muslims

1117 - The University of Oxford is founded

1118 - The Knights Templar are founded to protect Jerusalem and European pilgrims

1189 - The Third Crusade follows upon Muslims recapturing Jerusalem

1204 - Sack of Constantinople during the Fourth Crusade

1206 - Genghis Khan elected Khagan of the new Mongol Empire

1209 - The University of Cambridge is founded

1227 - Genghis Khan dies

1272 - The Ninth Crusade occurs, last significant crusading effort

1279 - Yuan Dynasty established in China by the Mongols and ruled by Kublai Khan

1291 - Fall of the Crusader States, end of the Crusades

1299 - The Ottoman Empire is founded by Osman I

1307 - The Knights Templar are rounded up and murdered with the backing of the Pope

1310 - Dante publishes his Divine Comedy

1328 - The First War of Scottish Independence

1337 - The Hundred Years' War begins between England and France

1347 - The Black Death ravages Europe killing 50% of the population

1368 - Ming Dynasty founded and captured Mongol capital, end of Mongol Empire

1453 - Constantinople falls to the Ottoman Turks, end of the Byzantine Empire

1492 - Christopher Columbus reaches the New World

1497 - King Henry VII sends an expedition across the Atlantic, start of the British Empire

1500 - End of Middle Ages, beginning of Modern Age

1506 - Leonardo da Vinci completes the Mona Lisa

1512 - Michelangelo paints the Sistine Chapel ceiling

1519 - Hernán Cortés leads the Spanish conquest of Mexico

1540 - Founding of the Jesuits

1602 - The Dutch East India Company is established

1603 - Edo Shogunate, feudal military government in Japan

1605 - The Gunpowder Plot in England fails

1607 - Jamestown, Virginia is settled as first permanent English colony in North America

1644 - Beginning of the Qing Dynasty, last imperial dynasty in China

1652 - Cape Town founded by the Dutch East India Company in South Africa

1692 - Salem witch trials in Massachusetts

1718 - The city of New Orleans is founded by the French in North America

1740 - Famine in Ireland kills 10% of the population

1760 - Industrial Revolution begins

1770 - Boston Massacre

1773 - Boston Tea Party

1776 - Declaration of Independence adopted, beginning of American Revolutionary War

1781 - British defeated at Battle of Yorktown, turning point in the war

1783 - End of American Revolutionary War, US gains independence

1789 - George Washington elected first US President & beginning of French Revolution

1799 - Dutch East India Company is dissolved

1803 - Beginning of Napoleonic Wars in Europe

1804 - World population reaches 1 Billion

1806 - Holy Roman Empire dissolved

1812 - War of 1812 between United States and Britain

1815 - Napoleon defeated at Battle of Waterloo, end of Napoleonic Wars

1837 - Queen Victoria's reign is considered the apex of the British Empire

1840 - End of the Industrial Revolution

1846 - Mexican–American War leads to Mexico's cession of modern-day Southwest US

1848 - The Communist Manifesto published

1853 - Perry Expedition opens Japan to Western trade and diplomacy

1859 - Charles Darwin publishes On the Origin of Species

1861 - American Civil War between the Union and seceding Confederacy

1863 - President Abraham Lincoln issues the Emancipation Proclamation

1865 - End of US Civil War, assassination of Lincoln, beginning of American Old West

1870 - Second Industrial Revolution begins

1872 - First National Park, Yellowstone, is created in US

1890 - Wounded Knee Massacre, end of American Indian Wars and American Old West

1894 - First Sino-Japanese War, Japan takes Taiwan

1904 - Russo-Japanese War, Japan gains influence in Manchuria & Korea

1905 - Albert Einstein forms theory of special relativity

1908 - The Ford Motor Company invents the Model T

1912 - Republic of China forms, end of dynasties. Wreck of the Titanic

1914 - Assassination of Archduke Franz Ferdinand triggers start of World War I

1917 - Russian Revolution ends the Russian Empire, beginning of Russian Civil War

1918 - Central Powers defeated, end of World War I

1921 - Adolf Hitler becomes Führer of the Nazi Party, beginning rise to power in Germany

1922 - Monarchy abolished, end of Ottoman Empire. End of Russian Civil War and formation of Soviet Union.

1924 - Death of Vladimir Lenin, Joseph Stalin rises to power in the Soviet Union

1925 - Benito Mussolini delivers speech, beginning his dictatorship in Italy

1927 - World population reaches 2 Billion & Chinese Civil War begins

1933 - Adolf Hitler becomes Chancellor of Germany

1937 - Second Sino-Japanese War and the Nanjing Massacre

1940 - Nazis invade Europe, beginning of War War II

1941 - Attack on Pearl Harbor, leads to US joining World War II

1944 - D-Day landings in Normandy

1945 - Execution of Mussolini, suicide of Hitler, & atomic bombing of Japan ends World War II. United Nations formed.

1947 - Beginning of the Cold War between USA and Soviet Union

1948 - Creation of State of Israel and subsequent War of Independence

1949 - China Communist Party wins Civil War and controls mainland China. Soviet Union develops the atomic bomb.

1955 - Beginning of the Space Race

1962 - The Cuban Missile Crisis nearly causes nuclear war

1963 - Martin Luther King Jr. delivers "I Have a Dream" speech

1968 - The Troubles begin in Northern Ireland. Nuclear Non-Proliferation Treaty is signed by all five nuclear powers.

1969 - US moon landing, end of the space race

1974 - World population reaches 4 Billion

1984 - Apple releases the Macintosh, personal computers become more widely available

1986 - Chernobyl Nuclear Disaster

1989 - Fall of the Berlin Wall, end of the Cold War

1990 - Tim Berners-Lee develops the World Wide Web at CERN, beginning of the Internet

1991 - Dissolution of the Soviet Union

1997 - Handover of Hong Kong to China, end of the British Empire

1998 - The Good Friday Agreement ends The Troubles in Northern Ireland

1999 - World population reaches 6 Billion

2001 - Terrorists attack the World Trade Center & US Pentagon

2007 - Apple releases the iPhone, beginning of modern smartphones

2019 - Covid-19 pandemic

2022 - World population reaches 8 Billion