Istanbul is the largest city in Turkey, straddling the Bosporus Strait, the boundary between Europe and Asia. It is considered the country's economic, cultural and historic capital. The city has a population of over 15 million residents, comprising 19% of the population of Turkey, and is the most populous city in Europe and the world's fifteenth-largest city.

The Turkish War of Independence was a series of military campaigns and a revolution waged by the Turkish National Movement, after parts of the Ottoman Empire were occupied and partitioned following its defeat in World War I. The conflict was between the Turkish Nationalists against Allied and separatist forces over the application of Wilsonian principles, especially national self-determination, in post-World War I Anatolia and Eastern Thrace. The revolution concluded the collapse of the Ottoman Empire; the Ottoman monarchy and the Islamic caliphate were abolished, and the Republic of Turkey was declared in Anatolia and Eastern Thrace. This resulted in a transfer of vested sovereignty from the sultan-caliph to the nation, setting the stage for Republican Turkey's period of nationalist revolutionary reform.