Answer:
Farmers and Fishermen
Step-by-step explanation:
Sumer was the first civilization in recorded history. It developed in the southern banks of the Tigris and the Euphrates, in what is now Iraq.
Sumerians were at first hunter-gatherers, like all humans at the time. However, once they started to raise domestic crops and animals, they became sedentary because they needed to tend the crops and the animals, and also because farming and animal husbandry produced a higher and steadier supply of food than hunting and gathering.
Thus, two of the first occupations in Sumer were farmers, who cultivated and harvested the crops, and fishermen, who supplemented the food supply with fish from the nearby rivers.