82
Lesson 82 of 84 · The Civil War
Clara Barton and Battlefield Medicine
The Industrial Revolution changed manufacturing. Factories replaced workshops, machines replaced hand tools, and cities grew rapidly as people moved from farms to find jobs.
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
1969
Astronauts land on the Moon
1989
The Berlin Wall falls
2001
September 11 attacks change U.S. security policy
Check Your Understanding
Question 1
1 of 2What tool puts events in order?