Which class of people is believed to have first ruled Sumer? A. Priest
B. Upper
C. Middle
D. Lower

Priests were believed to have first ruled Sumer.

Therefore, the answer is A. :)

power       the answer is a

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nuclear fission produces the atomic bomb, a weapon of mass destruction that uses power released by the splitting of atomic nuclei the fighting in iwo jima and okinawa affected the allies' pacific strategy because truman decided to drop the atomic bomb on mainland japan.