Answer: Mehmed II 1432 - 1481.
Explanation:
Mehmed II is one of the most successful sultans in Ottoman history. His greatest achievement in his career was the conquest of Constantinople, today's Istanbul. After that feat, he was given the name El-Fatih, which in translation would mean conqueror. When he came to power, his priority was to conquer Constantinople. After a long siege of the city, Mehmed II managed to conquer Constantinople in May 1453. He turned the conquered city into the capital of the Ottoman state.