Austro-Ottoman War: in the Battle of Vienna, several European armies join forces to defeat the Ottoman Empire

The Ottoman Empire, historically also known as the Turkish Empire, controlled much of Southeast Europe, West Asia, and North Africa from the 14th century to the early 20th century. It also controlled parts of southeastern Central Europe between the early 16th and early 18th centuries. The empire emerged from a beylik, or principality, founded in northwestern Anatolia in c. 1299 by the Turkoman tribal leader Osman I. His successors conquered much of Anatolia and expanded into the Balkans by the mid-14th century, transforming their petty kingdom into a transcontinental empire. The Ottomans ended the Byzantine Empire with the conquest of Constantinople in 1453 by Mehmed II. Further conquests by Selim I lead the Sultans to adopt the Islamic title of "Caliph".