Ancient Word puzzle thing

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Across
  1. 2. City-State
  2. 4. Hammurabi's Code
  3. 5. Harappa and Mohenjo-daro
  4. 6. Pyramids
  5. 7. Sumer
  6. 10. Hieroglyphics
  7. 13. Valley Civilization
  8. 14. Nile River
  9. 15. Pharaoh
  10. 16. Age
Down
  1. 1. Tigris and Euphrates
  2. 3. Mummification
  3. 4. The Epic of Gilgamesh
  4. 5. Indus Script
  5. 6. Fertile Crescent
  6. 8. of Civilization
  7. 9. Planning
  8. 11. Dynasty
  9. 12. Ziggurat
  10. 15. Cuneiform