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- Universe began - 13.8 bya
- Earth formed - 4.5 bya
- Life began - 3.8 bya
- Dinosaurs emerge - 230 mya
- Cretaceous–Paleogene (K–Pg) extinction event (Chicxulub Crater) - 66 mya
- Rise of Mammals begins - 66 mya
- First tool use (Australopithecus) - 3.3 mya
- Homo sapiens emerge - ca 300,000 ya
- Humans lived outside of Africa, 210,000 - 100,000 ya
- Large human migration out of Africa, 60,000 - 50,000 ya
- Early (European) Modern Humans and Behavioral Modernity, c. 50,000 – 40,000 ya
- Apollo 11 Cave Stones - ca 25,000 ya
- Pleistocene (Ice Age), c. 2.58 million - 11,700 ya
- Neolithic (Agricultural) Revolution - ca 10,000 BC
- Indo-European langauge family emerges - ca 6100 BC
- Indo-Europeans migrate east and west - ca 3000 BC
- Sumer, earliest known civilization in southern Mesopotamia, many independent city-states
- Uruk, emergence of urban life, Uruk is the type site, ca 4000 - 3200 BC
- Cuneiform (kyo͞o′nē-ə-fôrm′) emerges and evolves in Mesopotamia, ca 3500 - 3000 BC
- Hieroglyphs appear in Egypt, ca 3400 - 3200 BC
- Bronze Age, 3300 - 1200 BC
- Narmer (See also Menes and Scorpion II) unifies Upper and Lower Egypt, ca 3150 - 3100 BC
- Old Kingdom in Egypt, 2649 - 2134 BC
- Great Pyramid at Giza (Khufu, or Cheops) ca 2560 BC
- Akkadian Empire, first empire of Mesopotamia after the civilization of Sumer, uniting Akkadian and Sumerian speakers, ca 2334 – 2154 BC
- Sargon, first ruler of the Akkadian Empire - ca 2300 BC
- Enheduanna (en' heh dwanna), daughter of Sargon, high priestess and first known author, 2285 - 2250 BC
- The Akkadian Empire was replaced by Assyria in the north and eventually Babylonia (Amorite) in the south
- Assyria existed as a city-state from the 21st - 14th century BC and then as an empire from the 14th to the 7th century BC
- The Third Dynasty of Ur would be the last Sumerian dynasty, ca 2112 - 2004 BC
- The Old Babylonian Empire (Amorite), ca 1894 - 1595 BC
- Code of Hammurabi (sixth king of the Old Babylonian Empire), one of the earliest legal codes, ca 1754 BC
- Oldest sentence in an early alphabetic script, ca 1700 BC
- Minoan civilization flourished, ca 2000 - 1450 BC
- Mycenaeans, 1600 - 1070 BC
- The New Kingdom in Egypt, ca 1570 - 1069 BC
- Akhenaten's reign (and his wife Nefertiti), 1353 – 1336 BC
- Hittite Empire (New Kingdom), ca 1400 - 1200 BC
- King Suppiluliuma I rules (and corresponds with Akhenaten, Amarna Letters), ca. 1344 - 1322 BC
- Bronze Age Collapse - Mycenaean kingdoms, Hittite Empire, New Kingdom of Egypt, ca 1200 - 1150 BC
- Iron Age, ca 1200 – 500 BC
- Bible composed - 1st millennium BC
- Ashurbanipal, king of the Neo-Assyrian Empire, first systematically organized library, 668 - 631 BC
- Some of the best tablets recording The Epic of Gilgamesh were discovered in the ruins of Ashurbanipal library.
- Carthage settled by Phoenician colonists from Tyre - ca 814 BC
- Legendary founding of Rome - 753 BC
- Seven Kings of Rome (mostly legendary), 753 - 509 BC
- Neo-Babylonian (Chaldean) Empire, 626 – 539 BC
- Destruction of Jerusalem by Neo-Babylonian King Nebuchadnezzar II, 586 BC
- Babylonian Captivity, ca 586 - 539 BC
- Cyrus the Great founds Persian (Achaemenid) Empire - 550 BC
- Cyrus captures Babylon and liberates the Jews - 539 BC
- Roman Republic (established after Tarquinius Superbus deposed), 509 - 27 BC
- Conflict of the Orders (patricians vs plebeians) 494 - 287 BCE
- Persian Wars, 499 - 479 BC
- Darius I orders invasion of Greece, 492 BC
- Battle of Marathon, Greek army inflicts crushing defeat on the more numerous Persians - 490 BC
- Battle of Thermopylae, Spartans under King Leonidas hold off Persians for 3 days but are ultimately defeated - 480 BC
- The armada of Xerxis I is defeated at Salamis - 480 BC
- Final defeat of the Persians at the Battle of Plataea - 479 BC
- Classical Period of ancient Greece (from the Battle of Salamis to death of Alexander), 480 - 323 BC
- Pericles leads Athens, 461 - 429 BC
- Peloponnesian Wars, 431 - 404 BC
- Archidamian War (first phase of the Peloponnesian Wars), 431 – 421 BC
- Plague of Athens, 430 - 427 BC
- Death of Pericles from plague - 429 BC
- Peace of Nicias, 421 - 414/413 BC
- The Sicilian Expedition, major defeat for Athens, 415 - 413 BC
- Final phase of the Peloponnesian Wars, 413 - 404 BC
- Darius II, ruler of the Achaemenid (Persian) Empire allies with Sparta - ca 414 BC
- Spartan General Lysander destroys Athenian fleet at the Battle of Aegospotami - 405 BC
- Athens surrenders - 404 BC
- Death of Socrates - 399 BC
- Plato founds Academy - 387 BC
- Aristotle founds Lyceum - 334 BC
- Reign of Alexander the Great, 336 - 323 BC
- Alexander conquers the Persian Empire - 330 BC
- Death of Alexander in Babylon - 323 BC
- Hellenistic period from the death of Alexander in 323 BC to the emergence of the Roman Empire following the Battle of Actium in 31 BC
- The Seleucid Empire was founded by the Macedonian general Seleucus I Nicator in 321 BC
- Ptolemaic Kingdom, Greek state in Egypt, founded by Ptolemy I Soter, a Macedonian general and bodyguard of Alexander - 305 BC
- Celts (Called Gauls by the Romans) control much of Europe - 275 BC
- First Punic War (Punic refers to the people and their language, a Phoenician dialect), Rome vs Carthage, 264 - 241 BC
- Second Punic War, 218 - 201 BC
- Hannibal crosses Alps - 218 BC
- Third Punic War, 149 - 146 BC
- Destruction of Carthage, 146 BC
- Battle of Corinth, end of the Achaean War and the beginning of Rome's domination of Greece, 146 BC
- Period of significant literary activity in Rome, ca 100 BC - 100 AD
- Golden Age of Roman poetry (Virgil, Horace, Catullus, Ovid) 70 BC – 14 AD
- Sulla seizes Rome – 88 BC
- Cinna and Marius gain control of Rome, massacre Sulla’s supporters - 87 BC
- Pompey subdues pirates in the eastern Mediterranean and then defeats King Mithridates of Pontus, ca 67 – 62 BC
- Catilinarian conspiracy, attempted coup d'état by Lucius Sergius Catilina (Catiline) - 63 BC
- Catilinarian Orations (or Catilinarians), speeches by Cicero accusing Catiline of attempting to overthrow the Senate - 63 BC
- First Triumvirate, an informal alliance between Caesar, Pompey and Crassus, 60 - 53 BC
- Gallic Wars, Caesar vs the peoples of Gaul (France, Belgium, Germany and Switzerland), 58 - 50 BC
- Mark Antony joins Caesar's military staff - 54 BC
- Cleopatra VII Philopator, last ruler of the Ptolemaic Kingdom of Egypt, 51 - 30 BC
- Julius Caesar crosses the Rubicon, Mark Antony is second in command - 49 BC
- Civil war - Caesar vs Pompey, 49 - 45 BC
- Pompey assassinated - 48 BC
- Julius Caesar named Dictator for Life - 44 BC
- Julius Caesar assassinated by senators led by Brutus and Cassius - 44 BC
- Cicero's Philippics against Mark Antony, 44 - 43 BC
- Second Triumvirate, Octavian (Julius Caesar's great-nephew and heir), Mark Antony and Marcus Aemilius Lepidus - 43 BC
- Cicero proscribed as enemy of the state by the Second Triumvirate and executed, 43 BC
- The Triumvirs defeat Brutus and Cassius at the Battle of Philippi, Octavian and Antony divide the Republic - 42 BC
- Antony marries Octavian's sister, Octavia - 40 BC
- Antony divorces Octavia - 33 BC
- Octavian convinces the Senate to declare war on Cleopatra - 32 BC
- Battle of Actium, Agrippa leads Octavian fleet against Mark Antony and Cleopatra - 31 BC
- Battle of Alexandria, deaths of Antony and Cleopatra - 30 BC
- Roman Empire, 27 BC - 395 (unified)
- Octavian granted title Augustus (majestic), crowned emperor - 27 BC
- Death of Theodosius I, the last emperor to rule over unified Roman Empire - 395
- Eruption of Mt. Vesuvius buries Pompeii and Herculaneum - 79
- Mayan civilization (map), 250 - 900
- Constantine converts to Christianity - 312
- Edict of Milan, which makes Christianity legal in the Roman Empire - 313
- Constantinople founded - 330
- Edict of Thessalonica makes Christianity the official religion of the Roman Empire - 380
- Romulus Augustus defeated by Odoacer, traditional date (Gibbon) for the end of the Western Roman Empire - 476
- Western Roman Empire, 395 – 476
- Eastern Roman Empire, 395 – 1453
- Muhammad, 570 - 630
- Umayyad Caliphate, 2nd of four major Islamic caliphates, 661 - 750
- Battle of Tours, The Franks, Led by Charles Martel, Defeat Umayyad Caliphate Army - 732
- Pope Leo III crowns Charlemagne - 800
- Rollo, a Viking and the first ruler of Normandy, 911 – 928
- Battle of Hastings, William the Conqueror (descendant of Rollo) defeats Anglo-Saxon King Harold II - 1066
- King John signs Magna Carta - 1215
- Osman I founds the Ottoman Empire, ca 1299
- Petrarch ("father of Humanism") discovers Cicero's letters - 1345
- Black Death (25 million deaths in Europe), 1346-1351
- Aztec civilization (Mexico), 1325 - 1521
- Incan Empire (Peru, Ecuador, Bolivia, Argentina, Chile, Colombia), 1438 - 1533
- Ottoman Turks led by Mehmed II conquer Constantinople - 1453
- Renaissance, 1400 - 1600
- Humanism - a revival of classical letters, individualistic and critical spirit, and emphasis on secular concerns (vs Scholasticism).
- Gutenberg Bible, an edition of the Vulgate printed with moveable type, ca 1454 - 1455
- Columbus lands in the Americas, 1492
- Spanish conquest of the Aztec Empire (Cortés) 1519 – 1521
- Spanish conquest of the Inca Empire, conquest of Peru (Pizarro), 1532 – 1572
- Reign of Henry VIII, 1509 – 1547
- First Act of Supremacy declares Henry VIII Supreme Head of the Church of England - 1534
- Sir Thomas More executed - 1535
- Thomas Cromwell executed - 1540
- Reformation, 1517 - 1555
- Martin Luther posts his 95 theses - 1517
- The Council of Trent, 19th ecumenical council of the Catholic Church, embodiment of the Counter-Reformation, 1545 - 1563
- Peace of Augsburg (traditional end of the Reformation) - 1555
- Reign of Mary I, known as "Bloody Mary" by her Protestant opponents, 1553 - 1558
- England under Queen Elizabeth I defeats the Spanish Armada - 1588
- Scientific Revolution, 1543 - 1687
- On the Revolutions of the Heavenly Spheres, Copernicus - 1543
- Novum Organum, Francis Bacon - 1620
- Principia, Isaac Newton - 1687
- Thirty Years’ War, religious/political conflict in central Europe that killed 8 million, 1618 - 1648
- Ferdinand forces citizens to adhere to Catholicism, despite religious freedoms granted by Peace of Augsburg
- Bohemian Revolt - 1618
- Defenestration of Prague - 1618
- Peace of Westphalia - 1648
- A Dutch ship brings 20 African slaves to the British colony in Jamestown, Virginia - 1619
- English Civil War, 1642 - 1660
- Charles I is convicted of treason and beheaded - 1649
- Oliver Cromwell declares himself Lord Protector of England - 1653
- Charles II, son of Charles I, restored to monarchy - 1660
- Battle of Vienna - 1683
- Holy Roman Empire, Hapsburg Monarchy, Polish-Lithuanian Commonwealth defeat Ottoman Empire, ending its expansion into Europe
- Enlightenment (empiricism, individual liberty, religious tolerance) 1715 - 1789
- Death of Louis XIV (Sun King) - 1715
- Encyclopédie founded, Diderot - 1751
- Rousseau, The Social Contract - 1762
- Declaration of Independence - 1776
- Industrial Revolution, 1760 - 1840
- Spinning Jenny (1764), Water frame (1767), Spinning mule (1775 - 1779)
- Improvements to (Newcomen's) steam engine, James Watt - ca 1765
- Cotton gin, Eli Whitney - 1793
- Steam railway locomotive, Richard Trevithick - 1803
- French Revolution, 1789 – 1799
- Execution of Louis XVI and Marie Antoinette - 1793
- Reign of Terror, 1793 - 1794
- Napoleon becomes Emperor - 1804
- Napoleon is defeated and banished to Elba - 1814
- Napoleon escapes Elba and reclaims the throne (the "Hundred Days") but is defeated at Waterloo - 1815
- First photograph, Nicéphore Niépce, using a camera obscura - 1826
- Electric generator, the Faraday Disk, Michael Faraday - 1831
- Telegraph, Sir William Fothergill Cooke and Charles Wheatstone - 1837
- On the Origin of Species, Charles Darwin - 1859
- Marconi (Italy) builds a series of radio devices, 1895
- First flight, Orville and Wilbur Wright - 1903
- The Russian Revolution, 1917 - 1922