Ancient Civilization

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Across
  1. 3. The Great Wall was built by this civilization
  2. 5. Construction of Pyramids
  3. 6. Known as the "Cradle of Civilization"
Down
  1. 1. The river that sustained Ancient Egypt
  2. 2. The empire known for its code of laws written by Hammurabi
  3. 4. The first known system of writing