Columbian Exchange

🔑 Definition

The Columbian Exchange = transfer of plants, animals, people, diseases, and ideas between the Eastern Hemisphere (Afro-Eurasia) and the Western Hemisphere (Americas) after Christopher Columbus’ voyages.

🌽 From Americas → Old World

Foods:

• Maize (corn)

• Potatoes

• Tomatoes

• Chocolate (cacao)

• Peanuts

Impact:

• Increased population in Europe, Africa, Asia

• Improved diets (esp. potatoes in Europe)

🐮 From Old World → Americas

Animals:

• Horses

• Cows

• Pigs

• Sheep

Foods/Plants:

• Wheat

• Sugar

• Rice

Impact:

• Changed Native American lifestyles (horses → Plains culture)

• Plantation agriculture grows (esp. sugar)

🦠 Diseases (MOST IMPORTANT EFFECT)

To the Americas:

• Smallpox

• Measles

• Influenza

Impact:

• Massive population decline (up to 90% of Indigenous people)

• Helped Europeans conquer the Americas

👥 Movement of People

• Enslaved Africans brought to the Americas (Atlantic slave trade)

• Europeans migrated to the Americas

Impact:

• Creation of racially diverse societies

• Development of slavery-based economies

🌍 Environmental Effects

• Introduction of new crops → changed ecosystems

• Overgrazing by animals (cows, sheep)

• Deforestation for plantations

💰 Economic Effects

• Growth of global trade networks

• Rise of plantation systems (sugar, tobacco)

• Increased demand for slave labor

⚖ Social & Cultural Effects

• Mixing of cultures (syncretism)

• Spread of Christianity in the Americas

• New social hierarchies (race-based systems like caste system)

🧠 Big Picture (AP Test Tips)

• Most devastating effect: disease on Indigenous populations

• Most positive effect (globally): increased food supply → population growth

• Key system created: Atlantic slave trade + plantation economy

⚡ Super Short Cheat Sheet

• Exchange of goods, people, disease after 1492

• Americas → crops (corn, potatoes)

• Old World → animals, sugar, disease

• Disease = huge Native population loss

• Led to slavery, plantations, global trade