4
Lesson 4 of 84 · Decolonization
The Aztec Empire
Timelines arrange events in chronological order. They help us see sequences, notice patterns, and understand cause-and-effect relationships across years, decades, or centuries.
Key Facts
1
Oral histories preserve community stories.
2
Primary sources come from the time of the event.
3
Historians use evidence to support claims.
Timeline
1929
The Great Depression begins
1941
The U.S. enters World War II
1945
World War II ends
Check Your Understanding
Question 1
1 of 2What is an artifact?