What are some jobs of the Aryans?

Farmers and herders

Explanation:

they were nomadic herders and warriors, but they soon settled down to farming and by 1000 BCE, they were fully in charge of the region and had expanded their control over a wide area.

i believe that the answer to the question provided above is that  establishing smaller ethnic communities within larger communities  gives more chance for people to know each other more but this might lead to the  conflict between groups.