Social Studies Review: Egypt, geography, timelines

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Across
  1. 2. BC stands for Before
  2. 6. Before Common Era
  3. 8. One of the most important inventions ever
  4. 9. AD stands for Anno
  5. 11. Study of the Earth's features
  6. 12. The longest river in the world
Down
  1. 1. CE/AD
  2. 3. The desert surrounding the Nile River
  3. 4. The Nile River floods once a
  4. 5. A belief system
  5. 7. Trade, business, and money are related to
  6. 10. Blocked enemies from invading Egypt