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.
That is because they think that should not be there
The crusades introduced Europe to the works of Middle Eastern scholars, philosophers, and doctors. Richard the Lion-heart, King of England and one of the most famous Crusader Kings, had an Arab physician.<span />
It allowed Missouri to be a slave state.