The founding of Wallachia (Romanian: descălecatul Țării Românești), that is the establishment of the first independent Romanian principality, was achieved at the beginning of the 14th century, through the unification of smaller political units that had existed between the Carpathian Mountains, and the Rivers Danube, Siret and Milcov.
Prior to the consolidation of Wallachia, waves of nomadic peoples – the last of them being the Cumans and the Mongols – rode across the territory. The territory became a frontier area between the Golden Horde (the westernmost part of the Mongol Empire) and the Kingdom of Hungary after 1242. The Romanians in Muntenia, east of the Olt River, had to pay tribute to the Mongols; and west of the river, in Oltenia, they were oppressed by the Bans of Severin, appointed by the Kings of Hungary. The Golden Horde's domination decreased in the region at the end of the 13th century, and at that time the Kingdom of Hungary also underwent a strong political crisis. These events enabled the incipient states of the territory to consolidate their autonomy. (Full article...)