What was the primary reason hunter-gatherers kept moving? larger groups moved in and took over territory. food sources became scarce. smaller groups broke off from main groups and moved on. water sources became scarce.

the answer is food sources became scarce so they would always go where there is food

in 550 b.c.e. cyrus the great, the leader of the persians, conquered the medes and united the iranian people under one ruler for the first time. cyrus became the first king of the persian empire and went on to establish one of the largest empires in world.

the answer is c. hope is