Due to Mexico Independence, Mexicans were freely able to immigrate to the us. Cali, New Mexico and Texas all are good places because they have similar climate to the homeland of Mexico. This made these states (Florida included) great places to immigrate. Also they are close to the boarder
The correct answer is option A. "the Soviet Union built them too". The nuclear arms race took place during Cold War, and was a competition for supremacy in nuclear warfare between the United States and the Soviet Union. Under this competition if the United States built hydrogen bombs, the Soviet Union would built them too in order to stay in line with his competitor.
Many fled political and religious persecution. Others hoped to improve their condition by owning their own land or by participating in the fur trade. Some came as servants.
It would be "William Penn" who established a colonial haven for Quakers after being persecuted for his Quaker beliefs in England, since he founded the colony of "Pennsylvania".