52
Lesson 52 of 84 · Colonization
The Columbian Exchange: Foods, Animals, and Diseases
World War I (1914–1918) was one of the deadliest conflicts of its time. New weapons — machine guns, tanks, and poison gas — caused devastating casualties across Europe.
Key Facts
1
Cause and effect explain why things happen.
2
Oral histories preserve community stories.
3
Primary sources come from the time of the event.
Timeline
1492
Christopher Columbus reaches the Americas
1607
Jamestown, the first permanent English settlement, is founded
1620
The Pilgrims land at Plymouth Rock
Check Your Understanding
Question 1
1 of 2What tool puts events in order?