37
Lesson 37 of 84 · U.S. History
Creating the Constitution
Ancient Mesopotamia, between the Tigris and Euphrates rivers, is called the cradle of civilization. The Sumerians invented writing, the wheel, and early forms of government around 3500 BCE.
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
1964
The Civil Rights Act is signed
1969
Astronauts land on the Moon
1989
The Berlin Wall falls
Check Your Understanding
Question 1
1 of 2What tool puts events in order?