The Ottoman Empire was founded in 1299 by Osman I, a Turkic chieftain who established a small principality in northwestern Anatolia.

Istanbul (formerly known as Constantinople) served as the capital of the Ottoman Empire from 1453 until the empire's collapse in 1922.

Mehmed II, also known as Mehmed the Conqueror, led the Ottoman army to conquer Constantinople in 1453, ending the Byzantine Empire.

The ruler of the Ottoman Empire was known as the Sultan, a title that symbolized both political and religious authority.

Suleiman I, also known as Suleiman the Magnificent, ruled the Ottoman Empire from 1520 to 1566 and is considered one of its greatest sultans.

The Janissaries were an elite infantry unit of the Ottoman army, known for their discipline and effectiveness in battle.

Mehmed II ordered the construction of the Hagia Sophia mosque in Istanbul after conquering the city in 1453.

The Ottoman Empire was divided into administrative divisions called Vilayets, which were further subdivided into Sanjaks, Kazas, and Nahiyes.

Mahmud II implemented a series of reforms aimed at modernizing the Ottoman Empire, including the establishment of a regular army and the abolition of the Janissaries.

The Meclis-i Mebusan was the Ottoman Empire's first parliament, established in 1876 as part of the Tanzimat reforms.

The Battle of Lepanto in 1571, where the Ottoman navy was defeated by a coalition of Christian forces, is often seen as the beginning of the Ottoman Empire's decline.

Mehmed VI was the last sultan of the Ottoman Empire, reigning from 1918 until the empire's abolition in 1922.

The Treaty of Lausanne, signed in 1923, formally ended the Ottoman Empire and established the Republic of Turkey.

The Ottoman Empire was ruled by the House of Osman, a dynasty founded by Osman I.

Suleiman I was a patron of the arts and culture, and during his reign, the Ottoman Empire experienced a flourishing of art, architecture, and literature.