52
Lesson 52 of 84 · American Revolution
The Sons and Daughters of Liberty
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
1920
Women gain the right to vote (19th Amendment)
1929
The Great Depression begins
1941
The U.S. enters World War II
Check Your Understanding
Question 1
1 of 2What tool puts events in order?