1.) A famine caused people from Ireland to immigrate to the Untied States. This famine was caused by a failure in the potato crops that year. The correct answer is B.
2.) Arriving between 1820 and 1860, the second largest group of immigrants was from Germany. They came to the states to live in Pennsylvania. The correct answer is D.
3.) The people who opposed the immigration were called nativists. These people did not like any one from another country to settle in America. The correct answer is C.
4.) To improve their working conditions, the workers formed organizations called trade unions. There are still hundreds of thousands of active trade unions worldwide. The correct answer is C
