How did mehmet 11 overcome the strategic blocking of the golden horn by the byzantines?
a: he dragged his ships overland
b: he used gunpowder artillery
c: he laid a chain across the mouth of the golden horn
d: he laid ladders against the walls of the city

A:he dragged his ships overland

Explanation:

Mehmed II Fatih (March 30, 1432 - May 3, 1481), son of Murad II, Ottoman sultan between 1451 and 1481. He was the seventh sultan of the house of Osman (dynasty of the Osmanlis). In 1453 he took Constantinople, and thus brought about the final fall of the millennial Byzantine Empire.