What geographic feature was central to where and how the first civilizations developed?

Why did the us government remove native americans from the southeast in the 1830s

How was apartheid practiced in south africa

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.