The answer is <span>D: To force the natives into slavey</span>
There were many groups that were likely to face interrogation at US immigration stations in 1800s, but in general the Irish were prone to harsh scrutiny.
The Soviet Union became an ally of the United States and Great Britain during World War II. (the answer is B)
Origins of the American Civil War focus on the reasons why seven Southern states declared their secession from the United States the Union why they united to form the Confederate States of America or simply known as the Confederacy and why the North refused to let them go. While most historians agree that conflicts over slavery caused the war, they disagree sharply regarding which kinds of conflict ideological, economic political or social.
I'd say a monarchy or a dictatorship. (Which are basically the same thing, except one dude has a fancy crown.)
If that's not an answer and your only options are capitalism, socialism, and communism, pick communism, as they're a more extreme version of socialism, and often one party controls everything.