Answer: 1. A surplus of food, work share, and creating colonies.
2. Mesopotamia was in an area that was harsh and unpredictable.
3. Three ways civilization spreads from one region to another are trade, travel, and warfare. People travelled carrying goods from one region to another and would tell others about new ways of growing crops, making things, and living together. They traded ideas and skills.
Although trade brought people into peaceful contact with each other, civilization also spread through wars.
Explanation: Hope this works! :) If this not works, I am sorry. :( If it does, Your Welcome! :)
