Nomadic people received income from a. selling livestock b. making handicrafts, such as pottery c. raiding other herds d. forcing others to pay tribute e. selling crops

a. selling livestock

Explanation:

coz nomadic people keeps livestock for food, getting money, and other purpose so how can they get da money, it's by selling some no. of their lve stock for further roles

2686-2181 bce-- "egyptian civilization developed along the nile river in large part because the river’s annual flooding ensured reliable, rich soil for growing crops."

1069-664 bce-- "ancient egyptians developed wide-reaching trade networks along the nile, in the red sea, and in the near east."

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