The Grand Principality of Hungary or Duchy of Hungary (Hungarian: Magyar Nagyfejedelemség: "Hungarian Grand Principality", Byzantine Greek: Τουρκία) was the earliest documented Hungarian state in the Carpathian Basin, established in 895 or 896, following the 9th century Magyar invasion of the Carpathian Basin.
The Hungarians, a semi-nomadic people, formed a tribal alliance led by Árpád (founder of the Árpád dynasty) who arrived from Etelköz, their earlier principality east of the Carpathians.
The Kingdom of Hungary was a monarchy in Central Europe that existed for nearly a millennium, from 1000 to 1946. 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 (the Árpád dynasty) led the monarchy for 300 years. By the 12th century, the kingdom had become a European power.
Due to the Ottoman occupation of the central and southern territories of Hungary in the 16th century, the country was partitioned into three parts: the Habsburg Royal Hungary, Ottoman Hungary, and the semi-independent Principality of Transylvania. The House of Habsburg held the Hungarian throne after the Battle of Mohács in 1526 continuously until 1918 and also played a key role in the wars against the Ottoman Empire and the eventual expulsion of the Turks during and after the Great Turkish War.