1. Columbian Exchange New Patterns of Trade Main Idea
The voyages of Columbus led to a great transfer of people, plants, animals, and diseases back and forth across the Atlantic Ocean.

3. The Columbian Exchange
Plants, animals developed in very different ways in hemispheres
Europeans—no potatoes, corn, sweet potatoes, turkeys
People in Americas—no coffee, oranges, rice, wheat, sheep, cattle
The Exchange of Goods
Arrival of Europeans in Americas changed all this
Previously unknown foods taken back to Europe
Familiar foods brought to Americas by colonists
Sharing Discoveries
Introduction of “work animals” to the Americas was very significant. It provided people with a new source of labor and transportation.

5. Effects of the Columbian Exchange
Different Foods
Exchange of foods and animals had dramatic impact on later societies
Over time crops native to Americas became staples in diets of Europeans
Foods provided substantial nutrition and helped people live longer
Traditional cuisines changed because of Columbian Exchange
Economics
Activities like Texas cattle ranching and Brazilian coffee growing not possible without Columbian Exchange
Italian Food Without Tomatoes?
Until contact with Americas, Europeans had never tried tomatoes
Most Europeans thought tomatoes were poisonous
By late 1600s, tomatoes had begun to be included in Italian cookbooks

6. Effects of the Columbian Exchange
The Introduction of New Diseases
Native Americans had no natural resistance to European diseases
Smallpox, measles, influenza, malaria killed millions
Population of central Mexico may have decreased by more than 30% in the 10 yrs following European contact
Devastating Impact
Native American population continued to decline for centuries due to these epidemics (outbreak of disease)
Inca Empire decreased from 13 million in 1492 to 2 million in 1600

7. What were two lasting effects of the Columbian Exchange?
Find the Main Idea
What were two lasting effects of the Columbian Exchange?
Answer(s): possible answers—changes in cuisine, changes in crops grown around the world, epidemics