Which state did the united states acquired through imperialism in the late 1800s?

What would lead a historian to consider two events to have a relationship of correlation rather than causation

This law states that the "chinese laborers to this country endanger the good order of certain localities" in the united states. which of these would represent a "locality" that would most likely have wanted this law created and passed? a) dallas b) chicago c) atlanta d) san francisco

How did the economic impacts of the great depression differ in the united states and in the soviet union?