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- Season 1 The Agricultural Revolution
- Season 1 Indus Valley Civilization
- Season 1 Mesopotamia
- Season 1 Ancient Egypt
- Season 1 The Persians & Greeks
- Season 1 Buddha & Ashoka
- Season 1 2,000 Years of Chinese History! The Mandate of Heaven & Confucius
- Season 1 Alexander the Great and the Situation... the Great?
- Season 1 The Silk Road & Ancient Trade
- Season 1 The Roman Empire. Or Republic. Or... Which Was It?
- Season 1 Christianity from Judaism to the Constantine
- Season 1 Fall of the Roman Empire... in the 15th Century
- Season 1 Islam, the Quran, and the Five Pillars All Without a Flamewar
- Season 1 The Dark Ages... How Dark Were They, Really?
- Season 1 The Crusades - Pilgrimage or Holy War
- Season 1 Mansa Musa & Islam in Africa
- Season 1 Wait For It... The Mongols!
- Season 1 International Commerce, Snorkeling Camels, & The Indian Ocean Trade
- Season 1 Venice & The Ottoman Empire
- Season 1 Russia, The Kievan Rus, and the Mongols
- Season 1 Columbus, de Gama, and Zheng He! 15th Century Mariners
- Season 1 The Renaissance... Was it a Thing?
- Season 1 The Colombian Exchange
- Season 1 The Atlantic Slave Trade
- Season 1 The Spanish Empire, Silver, and Runaway Inflation
- Season 1 The Seven Years War
- Season 1 The Amazing Life and Strange Death of Captain Cook
- Season 1 Tea, Taxes, and The American Revolution
- Season 1 The French Revolution
- Season 1 Haitian Revolutions
- Season 1 Latin American Revolutions
- Season 1 Coal, Steam, and The Industrial Revolution
- Season 1 Capitalism and Socialism
- Season 1 Samurai, Daimyo, Matthew Perry, and Nationalism
- Season 1 Imperialism
- Season 1 Archdukes, Cynicism, and World War I
- Season 1 Communists, Nationalists, and China's Revolutions
- Season 1 World War II
- Season 1 USA vs USSR Fight! The Cold War
- Season 1 Decolonization and Nationalism Triumphant
- Season 1 Globalization I - The Upside
- Season 1 Globalization II - Good or Bad?
Crash Course World History - Season 1 Episode 23 The Colombian Exchange
6.70 12 minutes In which John Green teaches you about the changes wrought by contact between the Old World and the New. John does this by exploring the totally awesome history book "The Columbian Exchange" by Alfred Cosby, Jr. After Columbus "discovered" the Americas, European conquerors, traders, and settlers brought all manner of changes to the formerly isolated continents. Disease and invasive plant and animal species remade the New World, usually in negative ways. While native people, plants, and animals were being displaced in the Americas, the rest of the world was benefitting from American imports, especially foods like maize, tomatoes, potatoes, pineapple, blueberries, sweet potatoes, and manioc. Was the Columbian Exchange a net positive? It's debatable. So debate.
