Why is water needed to provide a spacecraft with oxygen ?

The persian empire finally fell to the armies of

Which of the following is a claim about ancient rome that a historian could build san argument around

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.