A. <span>Affects more than one region of the world.
</span>For example, in World War II, the turning point was when Hitler began to fall out of power as the other countries (the US, Britain, Russia) started to gain more and more power over him and Germany.
Its farms and factories were kept busy producing all the war supplies. Also it kept its inflow of skilled immigrants. I Hope this helps with whatever it is you need help with.
<span>C. the Berlin Blockade is the answer
plz make me brainliest</span>
IF I understand your question correctly, Historians find movement important because
-geography plays an important role. If people(s) move around, it could mean that their gathers and hunters, but if they stay and they build settlements, they might farm.
Geography can also play into what people believes in, which is why movement of a people can influence religion.
-Settlements can create type(s) of government that vary.
-movement of a people can also tell architectural advances. For instance, Native Americans didn't use wheels or horses that Europeans did.