Sultan Mehmed IV was the 19th Sultan of the Ottoman Empire, reigning from 1648 to 1687. He ascended to the throne at a young age and was known for his long rule during a period marked by military conflicts and territorial challenges. His reign saw the empire's involvement in the Great Turkish War against the Habsburg Monarchy and other European powers. Mehmed IV was also notable for his patronage of the arts and architecture, contributing to the cultural development of the empire. He commissioned several important buildings, including the Süleymaniye Mosque in Istanbul, which showcased the grandeur of Ottoman architecture during his time.