Because Ottoman Turks were protective of their territory, A. Europeans set out to find new trade routes. B. Europeans stopped trading with Asia.

C. China stopped producing fancy silks, teas D. Marco Polo returned to Italy after visiting

and spices.

China.

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.

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