The Ottoman Turks capture Buda, the capital of the Hungarian Kingdom.

The Ottoman Turks were a Turkic ethnic group in Anatolia. Originally from Central Asia, they migrated to Anatolia in the 13th century and founded the Ottoman Empire, in which they remained socio-politically dominant for the entirety of the six centuries that it existed. Their descendants are the present-day Turkish people, who comprise the majority of the population in the Republic of Turkey, which was established shortly after the end of World War I.

Buda is the part of Budapest, the capital city of Hungary, that lies on the western bank of the Danube. Historically, "Buda" referred only to the royal walled city on Castle Hill, which was constructed by Béla IV between 1247 and 1249 and subsequently served as the capital of the Kingdom of Hungary from 1361 to 1873. In 1873, Buda was administratively unified with Pest and Óbuda to form modern Budapest.

The Kingdom of Hungary was a monarchy in Central Europe that existed for nearly a millennium, from 1000 to 1946 and was a key part of the Habsburg monarchy from 1526-1918. The Catholic kingdom emerged as a continuation of the Grand Principality of Hungary upon the coronation of the first king Stephen I at Esztergom around the year 1000; his family led the monarchy for 300 years. By the 12th century, the kingdom had become a European power.