The 1453 conquest of Constantinople is an important turning point in global history because it A) ushered in Pax Romana B)began the Middle Ages C)contributed to the rise of the Ottoman Empire D) signifies the end of the Neapolitanic wars
it's C , the Ottoman's invaded Constantinople in 1453, and by winning that land it meant they finally had a foothold in Western Europe, from than on invading many more European cities.
