Muhammad Al-Fatih or Mehmed II commonly known as Muhammad Al-Fatih the Conqueror. He was an Ottoman Sultan who was rules for a short time, from August 1444 until September 1446. That was the first period he ruled the Ottoman. And later from February 1451 to May 1481. At age 21 he was conquest the Constantinople (now is called Istanbul) and brought the end of the Byzantine Empire. On 29 May, Constantinople fell, after fifty-seven-day siege. And then Mehmed move the capital city of Ottoman from Adrianople to Constantinople.
On the war, exactly in 1453 he commence the siege of Constantinople with an army between 80.000 and 200.000 troops, an artillery train over seventy large field pieces and a navy of 320 vessels, the bulk of them transport and storeships. And the city surrounded by land and sea. Based on the assertion that Constantinople had been the seat and capital of the Roman Empire since 330 AD, and whoever possessed the Imperial capital was the ruler of the Empire.
Not only conquest the Constantinople Mehmed II also conquest the other city, such as Serbia, Morea, the Black Sea coast, Bosnia, Albania, Genoese Crimea and alliance with Chrimean Khanate and other. Mehmed II died at the age of 49 on 3 of May 1481 at the campaigns to capture Rhodes and sothern Italy.