Why did nazis resort to a system of ghettos?

Supporters of using the atomic bomb at the end of world war ii believed that a japan might win the war if the bomb was not used. b americans were tired of war and the us should end it quickly. c russia was developing a bomb and the us needed to use it first. d japan was developing a bomb and the us needed to use it first.

Which political organization lobbied government officials to control the immigrant population

What is political gerrymandering, what does is accomplish, and why might legislators use this tactic in redistricting