Late Arpadian era

Further Hungarian expansion in the Balkans was interrupted by the Tatar invasion, the Hungarian rule in Cumania ceased, but the Banate of Szörény remained. The Balkan region only became the focus of Hungarian foreign policy after 1246-1247. The temporary confusion was resolved, and the duchy continued to exist for nearly forty years after the Tartar invasion. After the death of Stephen V, the strengthening of the defensive character seems to have been decisive, and six new fiefdoms were established between Croatia and the Banate of Szörény. During the Interregnum after the death of Andrew III, the power-gap let Bulgarians and Serbs to became the rulers of the region, and the Wallachians, who were in the course of becoming a nationality. ^[4]

Post Arpadian Era

Since the central power in the Kingdom of Hungary collapsed, Stephen Dragutin ruled an independent kingdom centered in Macsó, which also included regions of Usora and Soli in northern Bosnia, as well as Belgrade, Rudnik and Braničevo. This kingdom was known as the Kingdom of Syrmia (Srem) and Stephen Dragutin ruled it as king until his death in 1316.^[5]

Macsó remained in the hands of Dragutin's son Stephen Vladislaus II until 1319. The northern part of the region along the river Sava was captured by King Charles I of Hungary while the southern part remained firmly under Serbian administration.^[6]

In the 14th century, the bans of the Garai family (Paul I Garai, Nicholas I Garai and his son Nicholas II Garai) expanded their rule not only to Bosnia but also to Upper Syrmia and the last one also became the ban of Slavonia and Croatia, which were also parts of the Kingdom of Hungary at the time.

In the 1370s it was captured by Serbian Prince Lazar who in 1377–1378 donated several villages in Macsó to his newly founded monastery of Ravanica. Lazars's son despot Stefan Lazarević was officially granted with possession of Macsó by King Sigismund of Hungary in 1403 as a vassal of the Hungarian ruler. The territory got back to Hungary with Lazarević's death (1427). The Hungarian bans of Macsó existed during this period as well but only as titular holders and the title of ban was usually granted to the ispáns (counts) of southern counties of the Kingdom of Hungary.

The territory was conquered by the Ottomans around 1459, after the fall of the Serbian Despotate. The region was regained for the Kingdom of Hungary in 1476, when the fortress of Zaslon (modern Šabac) was taken.^[7] By the end of the 15th century, title of ban was transferred to commanders of Belgrade, thus creating the Banate of Belgrade, that existed until final Ottoman conquest of Belgrade and Šabac in 1521.^[8]