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Lesson 1 of 84 · Westward Expansion
Manifest Destiny: The Idea of Westward Expansion
History is the study of past events and the people, ideas, and forces that shaped them. By studying history, we understand how the world came to be and learn lessons for the future.
Key Facts
1
Primary sources come from the time of the event.
2
Historians use evidence to support claims.
3
Timelines show events in order.
Check Your Understanding
Question 1
1 of 2What is a primary source?