Answer:
Because they brought new religion, clothing, and better food.
Explanation:
The Mouse in "If you give a mouse a cookie", he has a cookie and wants the other thing afterwards. Three qualities the mouse has is he is smart, sometimes greedy and cravings
With the A. migration of people from fertile areas, knowledge of agriculture spread by diffusion.
When people migrate from a place, they move into other areas. When something diffuses, it spreads around.