13
Lesson 13 of 84 · American Revolution
The Battle of Yorktown
The Columbian Exchange transferred plants, animals, diseases, and ideas between the Americas and Europe after 1492. Potatoes went to Europe; horses and wheat came to the Americas.
Key Facts
1
Historians use evidence to support claims.
2
Timelines show events in order.
3
Cause and effect explain why things happen.
Timeline
1969
Astronauts land on the Moon
1989
The Berlin Wall falls
2001
September 11 attacks change U.S. security policy
Check Your Understanding
Question 1
1 of 2Why do we study history?