52
Lesson 52 of 84 · World History
The French Revolution
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
1776
The Declaration of Independence is signed
1787
The U.S. Constitution is written
1791
The Bill of Rights is ratified
Check Your Understanding
Question 1
1 of 2What tool puts events in order?