Why did americans prefer the usa stay out of ww2 in europe

How does a comet change when it comes close to the sun

Before the civil war, the constitution protected slavery -true -false

How did the russian revolution impact world war i? a) the russians required the allied powers to come to their aid and defeat the radical groups. b) the russians pulled out from the war, enabling the germans to focus on the western front. c) the russians created new technological advancements that were used by the allied powers to win. d) the russians created a new communist government that aligned with the central powers instead.