Classical Age of the Ottoman Empire
Expansion continued during the first half of the reign of Suleiman I (r. 1520-1566), who conquered first Belgrade (1521) and Rhodes, before invading Hungary in 1526, defeating and killing King Louis II in the Battle of Mohács and briefly occupying Buda. Lacking a king, Hungary descended into civil war over the succession, and the Ottomans gave support to John Zápolya as a vassal prince. When their rivals the Habsburgs began to achieve the upper hand, Suleiman directly intervened by again conquering Buda and annexing it to the empire in 1541. Elsewhere, Suleiman led major campaigns against Safavid Iran, conquering Baghdad in 1534 and annexing Iraq. Ottoman rule was further extended with the incorporation of much of North Africa, the conquest of coastal Yemen in 1538, and the subsequent annexation of the interior.
Territorial evolution of the Ottoman Empire
Murad I (nicknamed Hüdavendigâr, from Persian: خداوندگار, Khodāvandgār, "the devotee of God" – but meaning "sovereign" in this context) () (March or June 29, 1326, Sogut or Bursa  – June 28, 1389, Battle of Kosovo) () was the ruler of the Ottoman Empire, Sultan of Rûm, from 1359 to 1389. He was the son of Orhan I and the Valide Sultan Nilüfer Hatun (whose name means Water lily in Turkish), daughter of the Prince of Yarhisar or Byzantine Princess Helen (also named Nilüfer), who was of ethnic Greek descent and became the ruler following his father's death in 1359.