What system was used by both ancient Mesopotamia and ancient Egypt to make trade easier? A) Cattle Count
B) bureaucracy
C) command economy
D) weights and measures

russia because it is the biggest state

the map that was shown mostly had eastern asia highlighted. the answer would mostly likely be "the spread of communism into eastern asia set the stage for the korean war."

hopefully this .

a. poison gas was sprayed over battlefields by airplanes to weaken enemy positions before major attacks.