Mesopotamia :p

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Across
  1. 4. What is a mixture of rich soil and tiny rocks?
  2. 5. What was the larger area known for its fertile soil?
  3. 6. Who built the worlds first empire?
Down
  1. 1. What did plentiful food lead to?
  2. 2. Who concerned Sumer and took control?
  3. 3. What does mesopotamia mean in ancient greek?
  4. 4. What was the first city-state?