In the time of the Roman Empire, the region west of the Danube river was known as Pannonia. After the Western Roman Empire collapsed under the stress of the migration of Germanic tribes, the Migration Period continued bringing many invaders to Europe. Among the first to arrive were the Huns, who built up a powerful empire under Attila.
After Hunnish rule faded, the Lombards and the Gepids ruled in Pannonia for about 100 years, during which the Slavic tribes began migrating into the region. In the 560s, the Slavs were supplanted by the Avars, who maintained their supremacy of the land for more than two centuries. The Franks under Charlemagne from the west and the Bulgars from the southeast managed to overthrow the Avars in the early 9th century. However, the Franks soon retreated, and the Slavonic kingdom of Great Moravia and the Balaton Principality assumed control of much of Pannonia until the end of the century. The Magyars migrated to Hungary in the late 9th century.
Magyar tradition holds that the Country of the Magyars (Magyarország) was founded by Árpád, who led the Magyars into the Pannonian plain in 896 AD. The "Ten Arrows" mentioned above referred to ten tribes, the alliance of which was the foundation of the army of the invading Magyars.
The Kingdom of Hungary was established in 1000 by King Saint Stephen. Originally named Vajk, Stephen was a direct descendant of Árpád, and was baptised as a child. He married Giselle of Bavaria, the daughter of Henry II, Duke of Bavaria in 996, and after the death of his father Prince Géza in 997, he assumed the mantle of ruler and became the first Christian king of Hungary.
St. Stephen I received his crown from Pope Silvester II in 1000. As a Christian king, he established the Hungarian Church with ten dioceses and the royal administration of the country that was divided into counties (comitatus or vármegye). Hungary became a patrimonial kingdom where the majority of the land was the private property of the ruler. In 1083, he was canonized along with his son, Imre of Hungary.
Anyone who want to learn more from hungarian history, recommended to go to a video guided tour and if you don't have a place to sleep you can rent a studio of Budapest, it's not expensive and really comfortable.
