What ethnic group made up the ruling class of the yuan dynasty? a. mongol b. han c. japanese d. manchu

Answer is A: Mongol made up the ruling class of the Yuan Dynasty

Contributing factors  leading  to the harlem renaissance were the great migration of african americans to northern cities, which concentratedambitious  people in places where they could encourage each  other, and the first world war, which had created new industrial work opportunities for tens of thousands of people.