A. China began to profit greatly from selling opium in Europe
The first four Caliphs after the Prophet Muhammad are known as the Rightly Guided Caliphs (Rāshidūn); Abu Bakr,Umar, Uthman, and 'Ali.
The series of laws establishing 'seperate but equal' civil rights statutes in the southern states would be the Jim Crow laws.
I think it has to do with the founding of Taxes cause mexico didn't like the land and offered it to the Americans.