Why did the Constitutional Convention need to happen in the United States?

Why was the the superficial prosperity in the 1920s

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.

Which event occurred in 1943 and to make the allied victory possible choose all answers that are correct