In The Earliest Cities

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Across
  1. 4. Which civilizations had the great Nile River for transportation and irrigation?
  2. 5. Which ancient civilization began the Olympic Games?
Down
  1. 1. Identify the ancient civilization that developed on the Huang Ho River.
  2. 2. The ancient civilization that developed on the Tigris and Euphrates River System.
  3. 3. The earliest civilizations in India developed along which river?