Why has relying on one crop or resource presented an economic problem for many latin american nations? how have these nations been trying to solve these probems?

Draw conclusions  why might a cause like italian unification successfully draw people of very different backgrounds together?  

4. any area in which one nation has power over another; i. e. - this happened to china when it was defeated by japan

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.