Final answer:
Ottoman Sultan Mehmed II strengthened the empire by changing Constantinople to Istanbul, fostering tolerance, and promoting cultural exchange.
Explanation:
Ottoman Sultan Mehmed II helped to strengthen the empire by changing Constantinople to Istanbul, allowing scholars and artists from Asia and Europe, and demonstrating tolerance towards non-Muslim and European subjects. The conquest of Constantinople played a significant role in the expansion and prosperity of the Ottoman Empire.
Learn more about Ottoman Empire expansion under Mehmed II here:
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