The Ottoman Empire (Ottoman Turkish: دَوْلَتِ عَلِيّهٔ عُثمَانِیّه Devlet-i ʿAliyye-yi ʿOsmâniyye Modern Turkish: Osmanlı
İmparatorluğu), also historically referred to as the Turkish Empire or Turkey, was a state founded by Turkish tribes under Osman Bey in north-western Anatolia. With the conquest of Constantinople by Mehmed II in 1453, the Ottoman state became an empire. The empire reached its peak at 1683, covering parts of Asia, Europe and Africa. The reign of the long-lived Ottoman dynasty lasted for 623 years, from 27 July 1299 to 1 November 1922, when the monarchy in Turkey was abolished.
During the 16th and 17th centuries, in particular at the height of its power under the reign of Suleiman the Magnificent, the Ottoman Empire was one of the most powerful states in the world – a multinational, multilingual empire that stretched from the southern borders of the Holy Roman Empire to the outskirts of Vienna, Royal Hungary(modern Slovakia) and the Polish–Lithuanian Commonwealth in the north to Yemen and Eritrea in the south; from Algeria in the west to Azerbaijan in the east; controlling much of southeast Europe, Western Asia
and North Africa. At the beginning of the 17th century the empire contained 32 provinces and numerous vassal states, some of which were later absorbed into the empire, while others were granted various types of autonomy during the course of centuries.
With Constantinople as its capital and vast control of lands around the Mediterranean basin, the empire was at the
center of interactions between the Eastern and Western worlds for over six centuries.
After the international recognition of the new Turkish parliament headquartered in Ankara, by means of the Treaty
of Lausanne signed on 24 July 1923, the Turkish parliament proclaimed on 29 October 1923 the establishment of theRepublic of Turkey as the new Turkish State that succeeded and formally ended the defunct Ottoman Empire, in line with the treaty. The Ottoman Caliphate was abolished on 3 March 1924; the Caliphate's authority and properties were transferred to the Grand National Assembly of Turkey.
In Ottoman Turkish the Empire was referred to asDevlet-i ʿAliyye-yi ʿOsmâniyye (دَوْلَتِ عَلِيّهٔ عُثمَانِیّه),or alternatively Osmanlı Devleti (عثمانلى دولتى).In Modern Turkish it is known as Osmanlı Devletior Osmanlı İmparatorluğu. In older English usage, mostly the 19th century and earlier, it was usually referred to as the Turkish Empire or Turkey