This is false, it was part of the compromise of 1850
Immigration in the U.S. has caused families who pay taxes( everybody) to pay for others who did not come in legally. Immigrants can come across the border illegally and apply for social security in which they get our U.S. tax money and get money for any immediate family they have. Hence, American citizens are paying for illegal immigrants who do not pay taxes.
Answer:
North Carolina, Virginia, Arkansas, and Tennessee.
Explanation:
Twelve countries were involved in WWI.