Someone 40 points

identify and explain three causes and effects of the crusades.

Plz ? ? 20 points for this question ! hhjc6

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.

In an industry in which there are several providers of a type of good, why can one business not charge much higher prices for their goods?