B, C, and, D because the Neolithic Age was when they went from nomadic hunters and gatherers, to a farming and planting lifestyle which led to permanent homes and specialized jobs
Following the U.S. Civil War, the Radical Republicans attempted to put a land reform through Congress, promising, 40 acres and a mule, to newly-freed blacks in the South, which was rejected by moderate elements as socialistic. This failure left blacks without an economic base, and was one of the key contributing factors to the development of sharecropping and segregation.
They declared war on May 13, 1846!
(C)
It was part of an Act that was passed, that provided Prosecution of a war that was already between U.S. and Mexico.