D. Has changing conditions as the ocean alternates between high and low tides.
His pilgrimage to Mecca, as he was so devoted to his mission and was very generous with the surplus amount of gold that Mali had, it became very apparent to the rest of the Muslim world that the Mali Empire was one to be taken seriously.
C. People began to question the authority of monarchs and emphasized individualism
True, increased world competition is one way that farming in the United States changed in the late 1800s.