History

"If you want to understand today, you have to search yesterday." –Pearl Buck

Origins

• 13700 million (1370 crore) years ago: Big Bang
• 4560 million (456 crore) years ago: Solar System
• 4540 million (454 crore) years ago: Earth
• 4527 million (452.7 crore) years ago: Moon
• 4400 million (440 crore) years ago: Oceans
• 3800 million (380 crore) years ago: First Life (single cell prokaryotes)
• 3000 million (300 crore) years ago: Photosynthesis
• 2000 million (200 crore) years ago: Complex Cells (eukaryotes)
• 1000 million (100 crore) years ago: Multicellular Life
• 600 million (60 crore) years ago: Simple Animals
• 570 million (57 crore) years ago: Arthropods (ancestors of insects, arachnids and crustaceans)
• 550 million (55 crore) years ago: Complex Animals
• 500 million (50 crore) years ago: Fish
• 475 million (47.5 crore) years ago: Land Plants
• 400 million (40 crore) years ago: Insects
• 360 million (36 crore) years ago: Amphibians
• 300 million (30 crore) years ago: Reptiles
• 230 million (23 crore) years ago: Dinosaurs
• 200 million (20 crore) years ago: Mammals
• 150 million (15 crore) years ago: Birds
• 130 million (13 crore) years ago: Flowers
• 65 million (6.5 crore) years ago: Dinosaurs Extinction
• 4.8 million (48 lacs) years ago: Mammoth
• 2.5 million (25 lacs) years ago: Homo
• 600000 (6 lacs) years ago: Neanderthals

Prehistoric

• 200000 (2 lacs) years ago: Humans in Africa
• 60,000 years ago: Human migration out of Africa to Asia
• 50,000 years ago: Humans spread from Asia to Near East
• 31,000 years ago: Cave paintings
• 29,000 years ago: Neaderthals Extinction
• 26,000 years ago: Clothes, bags, baskets and nets
• 7,000 years ago: Wheel

Ancient

• 4250 BC: The earliest known date, the beginning of the Egyptian calendar.
• 3300 BC: Bronze Age begins
• 3300 BC: Indus Valley Civilization begins
• 3100 BC: First dynasty of Egypt
• 3000 BC: First known use of papyrus by Egyptians
• 2700 BC: Rise of Elam Civilization in Iran (Mesopotamia)
• 2600 BC: Maya Civilization
• 1800 BC: Alphabetic writing emerges
• 890 BC: Approximate date for the composition of the Iliad and the Odyssey
• 800 BC: Rise of Greek city-states
• 776 BC: First recorded Olympic Games
• 753 BC: Founding of Rome
• 653 BC: Rise of Persian Empire
• 600 BC: Pandyan kingdom in South India
• 563 BC: Buddha, founder of Buddhism is born
• 551 BC: Confucius, founder of Confucianism is born
• 549 BC: Mahavira, founder of Jainism is born
• 469 BC: Birth of Socrates
• 273 BC: Ashoka the Great becomes the emperor of the Mauryan Empire
• 200 BC: Chera dynasty in South India
• 100 BC: Chola dynasty rises in prominence.
• 4 BC: Widely accepted date for birth of Jesus Christ
• 68 AD: Year of the four emperors in Rome
• 395 AD: Roman Emperor Theodosius I outlaws all pagan religions in favour of Christianity

Mediaeval

• 406 AD: Beginning of the collapse of the Western Roman Empire
• 427 AD: Nalanda University established in Bihar, India as Buddhist center of learning
• 568 AD: The Kingdom of the Lombards is founded in Italy
• 571 AD: Mohammed, founder of Islam is born
• 590 AD: Gregory the Great becomes Pope
• 622 AD: Muhammad flees Mecca for Medina (Hijra)
• 631 AD: Death of Muhammed
• 638 AD: Jerusalem captured by Muslims
• 1099 AD: First Crusade. Jerusalem is re-taken from the Muslims
• 1117 AD: The University of Oxford is founded
• 1187 AD: Saladin recaptures Jerusalem
• 1206 AD: Genghis Khan established Mongol Empire
• 1209 AD: The University of Cambridge is founded.
• 1453 AD: Constantinople falls to the Ottoman Turks
• 1492 AD: Christopher Columbus reaches the Americas

Early Modern

• 1519: Death of Leonardo da Vinci and his completion of the Mona Lisa
• 1609: First telescopic observations of Galileo
• 1611: Performance of Shakespeare's last solo play, The Tempest
• 1655: Completion of the Taj Mahal
• 1687: Publication of Isaac Newton's Principia Mathematica
• 1764: Starting of Industrial Revolution
• 1776: Independence of the United States from Britain
• 1789: French Revolution
• 1859: Charles Darwin publishes The Origin of Species
• 1876: First long-distance telephone call by Alexander Graham Bell
• 1879: Thomas Edison tests his first light bulb
• 1889: Construction of the Eiffel Tower
• 1896: First modern Olympic Games

Modern

• 1914: Beginning of World War I
• 1918: End of World War I
• 1923: Time Magazine is first published
• 1928: Discovery of penicillin by Alexander Fleming
• 1939: Beginning of World War II
• 1945: End of World War II
• 1947: Independence of India and Pakistan
• 1957: Launch of Sputnik 1 and the beginning of the Space Age
• 1969: Moon landings
• 1980: Beginning of the Iran-Iraq War
• 1988: End of the Iran-Iraq War
• 1990: Gulf war begins
• 1991: Gulf war ends
• 1996: Dolly the Sheep, first cloned mammal is born

21st century

• 2001: 9/11 attacks destroy the World Trade Center in New York. Afghan War begins
• 2003: Iraq War or Invasion of Iraq begins
• 2006: Saddam Hussein executed in Iraq
• 2008: Barack Obama is elected as first black President of the United States
• 2009: Burj Khalifa, the world's tallest skyscraper, opens in Dubai
• 2010: Artificial Life in lab is created (Synthia)
• 2011: South Sudan becomes the newest internationally recognized country in the world. Syrian civil war begins
• 2013: With Mangalyaan, India becomes the first Asian nation to reach Martian orbit and the first nation in the world to do so on its maiden attempt
• 2018: The first monkeys are cloned, and first genetically modified humans reported, in China
• 2020: COVID-19 pandemic led to global social and economic disruption

Source: Mostly Wikipedia (Some dates, especially the ancient ones may not be the exact)