How did trade deals made by Muslim merchants affect the medieval world? A. People agreed to help pilgrims as they traveled.

B. People were allowed to immigrate to new areas.

C. People were able to pay less money for foreign goods.

D. People from different areas were able to interact peacefully.

C. People were able to pay less money for foreign goods.

Explanation:

Trade among different nations, societies, and states, always reduces the costs of goods and services accross the board, and there are many economic theories that explain why: the absolute advantage of Adam Smith, the comparative advantage of David Ricardo, or the Hecksher-Ohlin Model.

In the medieval world, this was no exception, and since the Muslims controlled a vast area between Europe and East Asia, they acted as the kingmarkers in international trade between the two regions (and between the Muslim controlled-regions themselves), which led to the reduction of the price of many goods and services.

d. direct

. political or economical policy that isolates a country from participating in international relationships. it has been suggested that the united states participates in isolationism because of its lack of involvement in particular wars or alliances.