HELP ME PLEASE I NEED HELP

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.

If french military leaders declared that their primary goal in the war was to defend russia, which of the following conclusions would be supported?

What evidence did mary leaky use to understand how early humans thought and felt