during the 16th century the ottoman empire expanded to it's height under which ruler
Ottoman Empire During the 16th and 17th centuries, at the height of its power under the reign of Suleiman the Magnificent, the Ottoman Empire was a multinational, multilingual empire controlling most of Southeast Europe, parts of Central Europe, Western Asia, parts of Eastern Europe and the Caucasus, North Africa, and the Horn of Africa.[12] At the beginning of the 17th century, the empire contained 32 provinces and numerous vassal states. Some of these were later absorbed into the Ottoman Empire, while others were granted various types of autonomy during the course of centuries.[dn 6]
History of the Ottoman Empire during World War I The Ottoman entry into World War I began on 29 October 1914 when it launched the Black Sea Raid against Russian ports. Following the attack, Russia and its allies (Britain and France) declared war on the Ottomans in November 1914. The Ottoman Empire started military action came after three months of formal neutrality, but it had signed a secret alliance with the Central Powers in August 1914.