What Ottoman Sultan stretched the western boundaries of the empire into easter Europe?

Suleiman the Magnificent, also known as Suleiman I, was the tenth as well as the longest reigning Sultan of the Ottoman Empire during 1500s. He was the Sultan of the Ottoman Empire from 1520 to 1566 and among his greatest achievements were the expansion of the Ottoman Empire in the Eastern Europe (as well as in the Middle East and Africa) and the changes he made in his reforms.