The Ottoman Empire (in Turkish: Osmanlı İmparatorluğu), officially the Sublime State of Ottomania (in Ottoman Turkish: دولت عالیه عثمانیه, in Turkish: Devlet-i Aliyye-i Osmâniyye) was a multinational state that lasted from 1299 to 1923. It was centered in Turkey and controlled the eastern and southern lands around the Mediterranean Sea. The empire was founded by Osman I around 1299, and was most powerful from around 1400 to 1600, when it controlled trade and politics in southeastern Europe, southwest Asia, and northern Africa. Suleiman the Magnificent was one of the most powerful rulers.

The empire was a collection of conquered countries. The Sultan sent governors to rule these countries or provinces, with titles such as Pasha or Bey. The most famous in the early 19th century was Muhammad Ali Pasha. Besides provinces, the empire also had tributary states.

In later years, the Ottoman Empire began to weaken. In the later part of the 19th century, it became known as "the sick man of Europe". The empire was defeated in World War I and broke apart.