Neolithic Crossword

123456789
Across
  1. 1. One of the world's first civilizations
  2. 6. The wide-scale transition of human cultures from hunting and gathering to agriculture
  3. 7. A surplus of this is necessary for specialization and innovation to occur
  4. 8. One of the two rivers bordering the Fertile Crescent
  5. 9. Extinction of large mammals, like these, might have compelled humans to learn to farm
Down
  1. 1. This (the act of pursuing a particular line of work and achieving know-how in it) was made possible by the Agricultural Revolution
  2. 2. One of the first places humans settled was here, also known as the Fertile Crescent
  3. 3. An innovation of the Neolithic era
  4. 4. One of the two rivers bordering the Fertile Crescent
  5. 5. The Sumerian writing system