The Hungarian republican leaders Mihály Károlyi and Oszkár Jászi were inclined to give a wide autonomy to the Slovene March.
On 19 January 1918, a convention was assembled in Beltinci, which proposed that the Slovene March became an autonomous territory in Slovenia and in Yugoslavia.
Initially, the area was assigned to Hungary, but with the outbreak of the Hungarian Revolution of 1919, the situation changed dramatically.
After less than two weeks, the tiny Republic was invaded by the Army of the Kingdom of Serbs, Croats and Slovenes that occupied the entire Prekmurje.
With the Treaty of Trianon of June 1920, almost the totality of the area was assigned to the Kingdom of Serbs, Croats and Slovenes.
The name however made little sense in the changed circumstances, since the region was not any more a Slovene-speaking peripheral area of Hungary, but was considered part of Slovenia.