1854
The Gadsden Purchase, or Treaty, was an agreement between the United States and Mexico, finalized in 1854, in which the United States agreed to pay Mexico $10 million for a 29,670 square mile portion of Mexico that later became part of Arizona and New Mexico.
I think its The answer is b
The practice of segregating railroad cars was decided in the Supreme Court case Plessy vs Ferguson. In this case, Homer Plessy argues that even though he is 1/8th African-American, he should still be able to sit in the 1st class white section since he paid for a ticket there. The Supeme Court ruled against him stating that cars can be separated by race as long as they are equal. This concept of separate but equal became wildly popular in the US and was used in schools, restaurants, etc.
