In this period autonomism as a political tactic was abandoned and annexationist positions were supported, aiming eventual incorporation of occupied areas into Bulgaria.
In the aftermath of World War I, the IMRO developed an agenda for an autonomous or even independent Macedonia, on the territories of Greece, Yugoslavia and Bulgaria, under the protectorate of the Great Powers, that meant in fact a second Bulgarian state on the Balkans.
[6] IMRO then had de facto full control of Pirin Macedonia (Bulgarian part), which it used as a base for hit and run attacks against Yugoslavia and Greece.
Ivan Mihailov and Aleksandar Protogerov, who assumed IMRO's leadership after Todor Alexandrov's death in 1924, changed the main task for an autonomous Macedonian state, but officially under Bulgarian control, as it was a way for a subsequent unification with Bulgaria.
The Comintern policy on the Macedonian question rose the slogan of a united and independent Macedonia at the 5th Conference of the Balkan Communist Federation in 1923.
Its main objective was to free the region of Macedonia, and to create a new political entity which would become an equal member of the future Balkan Communist Federation.
The local high-ranking politician Metodija Andonov-Čento, who tried to create a fully independent Macedonia, was charged of being supporter of pro-Bulgarian ideas, and was sentenced to eleven years in prison under forced labor.