The Hungarians conquer the eastern parts of Great Moravia, ending with this the Hungarian Conquest of the Carpathian Basin, while the Slavs from West and North to this region, start to pay tribute to them.

The date when Moravia ceased to exist is uncertain, because there is no clear evidence either on the "existence of Moravia as a state" after 902 or on its fall. A short note in the Annales Alamannici refers to a "war with the Hungarians in Moravia" in 902, during which the "land succumbed", but this text is ambiguous.

Alternatively, the so-called Raffelstetten Customs Regulations mentions the "markets of the Moravians" around 905. The Life of Saint Naum relates that the Hungarians occupied Moravia, adding that the Moravians who "were not captured by the Hungarians, ran to the Bulgars". Constantine Porphyrogenitus also connects the fall of Moravia to its occupation by the Hungarians. The destruction of the early medieval urban centers and fortresses at Szepestamásfalva, Dévény and other places in modern Slovakia is dated to the period around 900.