Who took over the Ottoman empire in 1453?

Mehemed the 2nd took over the Ottoman empire

the question is asking about the things that may have affected and what they effects had on the spanish conquest and settlement of america

explanation:

in 550 b.c.e. cyrus the great, the leader of the persians, conquered the medes and united the iranian people under one ruler for the first time. cyrus became the first king of the persian empire and went on to establish one of the largest empires in world.