How did pastoral societies interact with early agricultural civilizations

The answer for this question is: Pastoral societies often raided agricultural villages for livestock

Pastoral societies are a form of nomadic society that raises livestock as their primary ways of life.

These societies tend to rely only on nature to find foods for their livestocks, and their livestock often dies during a certain period of the season. So, the society often stole from agricultural civilizations that tend to have a stable amount of foods.