Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree....
Early 14th century
The nomadic Turkmen chief Osman I founds the Ottoman dynasty and empire in western Anatolia (Asia Minor). The name of the empire is derived from the Arabic form (?Uthmān) of his name.
Osman’s son and successor Orhan captures the city of Bursa from the Byzantines in 1324. (Some sources date the event to 1326.) Orhan is soon able to capture the remaining Byzantine towns in northwestern Anatolia: ?znik (1331), ?zmit (1337), and üsküdar (1338).
Orhan’s son Murad I extends Ottoman conquests northward into Thrace, culminating with the capture of Adrianople.
Much of Anatolia falls to the Ottomans during the reign of Mehmed II (ruled 1444–46 and 1451–81). It is he who captures Constantinople (Istanbul) in 1453 and makes it the capital of the Ottoman Empire. Mehmed lays the foundations for Ottoman rule in Anatolia and southeastern Europe.
Bayezid II reigns during this period. Bayezid extends the Ottoman Empire in Europe, adds outposts along the Black Sea, and puts down revolts in Anatolia. He also captures Venetian ports to establish bases for complete Ottoman naval control of the eastern Mediterranean.
Bayezid’s successor, Selim I, comes to the throne in 1512. He establishes firm control over the army. During his reign, which lasts until 1520, the Ottomans move south- and eastward into Syria, Arabia, and Egypt. Selim doubles the size of the empire, adding to it all the lands, except Iran and Mesopotamia, that had made up the Islamic state known as the Caliphate. By acquiring the holy places of Islam, Selim cements his position as the religion’s most powerful ruler. Leading Muslim intellectuals, artists, artisans, and administrators come to Constantinople from all parts of the Arab world. They make the empire much more of a traditional Islamic state than it had been.
Süleyman I (also known as Süleyman the Magnificent) becomes the Ottoman sultan in 1520. He captures Belgrade (now in Serbia) in 1521 and Rhodes (now part of Greece) in 1522–23. He breaks the military power of Hungary. In 1529 he lays siege to Vienna but is forced to withdraw for lack of supplies. He also wages three campaigns against Persia (Iran). In addition, Süleyman establishes the Ottoman Empire as a major naval power. Algiers in North Africa falls to his navy in 1529 and Tripoli (now in Libya) is defeated in 1551. During Süleyman’s long reign (1520–66) the Ottoman Empire is at the height of its political power. Aside from his military victories, Süleyman is noted for building many mosques, aqueducts, bridges, and other public works.
Late 17th and 18th centuries
The Ottomans fail in their final attempt (1683) to capture the city of Vienna. This and subsequent losses lead them to relinquish Hungary in 1699. The empire continues to weaken in the 18th century, losing a great deal of territory.
Abdülmecid I (ruled 1839–61) and Abdülaziz (ruled 1861–76) carry out a number of reforms, especially in the areas of education and law. However, a lack of money and of skilled men handicaps the sultans. In addition, traditionalists argue that their reforms are destroying the empire’s Islamic character. Meanwhile, pressure from major European powers makes it difficult for the sultanate to consolidate its powers. The empire comes to be called the “sick man of Europe.”
Abdülhamid II rules the Ottoman Empire from 1876, but a revolutionary group, known as the Young Turks, arises in opposition to his authoritarian regime and deposes the sultan by 1909. The Ottomans fight on Germany’s side in World War I (1914–18). Ottoman defeat in the war inspires an already fervent Turkish nationalism. The postwar settlement (1920), which greatly reduces Ottoman territory, outrages the nationalists. A new government under the leadership of Mustafa Kemal, known as Atatürk, emerges at Ankara, Turkey. The last Ottoman sultan, Mehmed VI, flees in 1922 after the sultanate is abolished. Turkey is proclaimed a republic in 1923. Atatürk serves as its first president.