Cradle of Civilization

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Across
  1. 4. The birthplace of the modern world.
  2. 5. A tool allowing farmers to prepare the soil for planting.
Down
  1. 1. The ancient system of writing on clay.
  2. 2. 60 minutes, 60 seconds, 365 days.
  3. 3. An invention that made moving things around easier.