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.
Muhammad Ali dynasty
In 1914, Khedive Abbas II sided with the Ottoman Empire which had joined the Central Powers in the World War I, and was promptly deposed by the British in favor of his uncle Hussein Kamel. The legal fiction of Ottoman sovereignty over Egypt and Sudan, which had for all intents and purposes ended in 1805, was officially terminated, Hussein Kamel was declared Sultan of Egypt and Sudan, and the country became a British Protectorate. With nationalist sentiment rising, as evidenced by the revolution of 1919, Britain formally recognized Egyptian independence in 1922, and Hussein Kamel's successor, Sultan Fuad I, substituted the title of King for Sultan. However, British occupation and interference in Egyptian and Sudanese affairs persisted. Of particular concern to Egypt was Britain's continual efforts to divest Egypt of all control in Sudan. To both the King and the nationalist movement, this was intolerable, and the Egyptian Government made a point of stressing that Fuad and his son King Farouk I were "King of Egypt and Sudan".