Invention of the wheel
The earliest evidence of wheeled vehicles appears around the mid-4th millennium BCE in Mesopotamia, the northern Caucasus and Central Europe.
The earliest evidence of wheeled vehicles appears around the mid-4th millennium BCE in Mesopotamia, the northern Caucasus and Central Europe.
The Sumerians of Mesopotamia develop cuneiform, one of humanity's earliest writing systems, first used for economic record-keeping.
Sargon of Akkad conquers the Sumerian city-states, creating the first known multi-ethnic empire in Mesopotamia.
King Hammurabi of Babylon issues one of the oldest and most complete written legal codes known.
Ramesses II's Egyptian army fights the Hittites near Kadesh in Syria, one of the largest chariot battles of antiquity.
Ramesses II and the Hittite king Hattusili III conclude one of the earliest peace treaties whose text survives.
Many Eastern Mediterranean states, including the Hittite Empire, collapse or decline sharply during a prolonged period of upheaval.
Ancient Greek tradition placed the war between the Greeks and Troy around the 12th century BCE; its historicity remains debated.
The Phoenicians use a consonantal alphabet that became the ancestor of the Greek, Latin, Hebrew and Arabic scripts.
The Neo-Assyrian Empire captures Samaria, ending the northern Kingdom of Israel and deporting part of its population.
A Babylonian and Median coalition sacks Nineveh, the Assyrian capital, marking the collapse of the Neo-Assyrian Empire.
Nebuchadnezzar II's forces take Jerusalem, destroy Solomon's Temple and deport many Judeans to Babylon.
Cyrus II defeats the Median king Astyages, laying the foundation of the Persian Achaemenid Empire, the largest empire of its time.
Cyrus the Great takes Babylon, ending the Neo-Babylonian Empire; he later allows exiled Judeans to return to Judah.
Darius I takes the throne, organising the empire into satrapies and building Persepolis and the Royal Road.
Alexander the Great defeats Darius III, sealing the fall of the Achaemenid Empire.
Alexander the Great dies in Babylon aged 32, leaving an empire stretching from Greece to India.
Parthian forces crush the Roman army of Crassus, opening centuries of Roman–Iranian rivalry.
Roman forces under Titus take Jerusalem during the First Jewish–Roman War and destroy the Second Temple.
By the end of Emperor Trajan's reign the Roman Empire stretches from Britain to Mesopotamia.
Ardashir I defeats the last Parthian king, founding the Sasanian Empire, the last Iranian empire before the rise of Islam.
The Roman Empire nearly collapses under civil wars, invasions, plague and economic crisis until Diocletian's accession.
The first ecumenical council of Christianity, convened by Constantine, condemns Arianism and formulates the Nicene Creed.
Emperor Constantine I dedicates Constantinople as the new capital of the Roman Empire.
The first recorded pandemic of bubonic plague sweeps the Mediterranean, devastating the Byzantine Empire and killing vast numbers.
According to Islamic tradition, Muhammad receives his first revelation in the cave of Hira near Mecca, beginning his prophetic mission.
The Prophet Muhammad and his followers migrate from Mecca to Medina; the year becomes the start of the Islamic calendar.
Muhammad and his followers enter Mecca almost without bloodshed, making it the centre of Islam.
After Muhammad dies in Medina, Abu Bakr is chosen as the first caliph, beginning the Rashidun Caliphate.
Rashidun forces defeat the Sasanian army in Iraq, opening the way to the capture of the capital Ctesiphon.
Rashidun Muslim forces defeat the Byzantine army, opening the way to the conquest of Syria and the Levant.
The last Sasanian king, Yazdegerd III, is killed, completing the Arab Muslim conquest of Persia.
Muawiya I establishes the Umayyad dynasty with its capital at Damascus, making the caliphate hereditary.
Husayn ibn Ali, grandson of Muhammad, is killed by Umayyad forces at Karbala, an event central to Shia Muslim memory.
Caliph Abd al-Malik completes the Dome of the Rock, one of the oldest surviving works of Islamic architecture.
A movement rising from Khorasan defeats the Umayyads at the Battle of the Zab, establishing the Abbasid Caliphate.
Caliph al-Mansur builds the 'Round City' of Baghdad as the Abbasid capital; it soon becomes one of the world's largest cities.
At Baghdad's House of Wisdom, al-Khwarizmi writes his treatise on completion and balancing, founding algebra as a discipline; the word "algebra" derives from its title.
Under Caliph al-Ma'mun the House of Wisdom becomes a centre of translation and scholarship, preserving and extending Greek, Persian and Indian learning.
Ibn al-Haytham composes the Book of Optics, explaining vision as light entering the eye and emphasising experimental method.
Ibn Sina (Avicenna) completes The Canon of Medicine, a medical encyclopedia used as a standard text in the Islamic world and Europe for centuries.
Papal legates lay a bull of excommunication on the altar of Hagia Sophia, marking the split between Roman Catholic and Eastern Orthodox churches.
The Seljuks defeat and capture Byzantine Emperor Romanos IV, opening Anatolia to Turkish settlement.
The First Crusade takes Jerusalem after a siege, followed by a massacre of its inhabitants.
Launched after the fall of Edessa and led by Louis VII of France and Conrad III of Germany, the crusade ends in failure before Damascus.
Saladin destroys the army of the Crusader Kingdom of Jerusalem near Tiberias, causing most Crusader strongholds to fall.
After a short siege, Saladin takes Jerusalem, ending 88 years of Crusader rule and prompting the Third Crusade.
Richard the Lionheart and other European monarchs retake Acre but not Jerusalem; the Treaty of Jaffa with Saladin ends the campaign.
Mamluk slave-soldiers overthrow the Ayyubids and seize power in Egypt, ruling Egypt and Syria for over two and a half centuries.
Hulagu's Mongol army takes and devastates Baghdad, killing Caliph al-Musta'sim and ending the Abbasid Caliphate in Baghdad.