In the fifteenth century, which of the following would most facilitate the Ottoman Turks to continue to expand their presence in Europe?
a. The Ottoman Turks successfully conquered the city of Constantinople.
b. Ottoman diplomats, under the direction of the Sultan, uniformly rejected peace treaties with Baltic leaders.
c. Exploitation of tensions between Roman Catholics and protestants over acceptable religious practices.
d.The centralization of markets through the Ottoman’s trade monopoly in the Mediterranean.