25
Lesson 25 of 84 · Westward Expansion
The Dawes Act and Its Effects
The Space Race led to remarkable achievements. The Soviet Union launched Sputnik in 1957. The U.S. landed astronauts on the Moon in 1969.
Key Facts
1
Timelines show events in order.
2
Cause and effect explain why things happen.
3
Oral histories preserve community stories.
Check Your Understanding
Question 1
1 of 2Which is a secondary source?