70
Lesson 70 of 84 · Westward Expansion
The California Gold Rush
Ancient Egypt flourished along the Nile for over 3,000 years. Egyptians built the pyramids, developed hieroglyphic writing, and made advances in medicine, math, and architecture.
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?