In Bulgaria on 09.09.1944 there was a communist coup d'état (the USSR had declared war on Bulgaria on 05.09.1944). The goverment was overthrown and a new goverment composed of the Fatherland front was established. The Fatherland front was composed of Kimon Georgiev leader of Zveno(this is his 3rd coup d'état), BWP, BANU "Pladne", the Bulgarian Workers' Social Democratic Party (Wide Socialists). A new goverment was elected.

Days after the the coup d'état the USSR would invade. Bulgaria falls under Soviet occupation until 1947.

A series of People's courts were created where verdics would be handed out to "fascists". A lot of them were settling old scores and a lot of innocent people were killed. A lot of prisoners are released and are recruited into the forces of the communists. The military officers would be arrested and people would be incorporated into the army to make sure that the ideology of the army is a proper one (red). The leaders of the Fatherland Front army - NOVA would be incorporated into the army in order to prepare for the offensive against Germany. A lot of the Bulgarian officers were sentenced to years in prison. There were a total of 2730 death sentences, 1921 life, 19 for 20 years, 962 for 15 years, 727 for 10 years and 3241 shorter ones. The monarcy was removed via a referendum. The communists slowly under Georgi Dimitrov would push out the other parties out of the goverment by either assimilating them or by declaring them fascist. The only exception is BANU "Pladne" who remained during the entire regime as a second party with 0 inffluence on the goverment.

The economy was reorganized to fit the new socialist/communist ideology the country (goverment) had. During 4-8 January 1949 COMECON/CMEA is created. Bulgaria becomes dependant on the USSR for its economy and takes a lot of loans from them in exchange Bulgaria is one of the USSR's most loyal allies during the period.
The land, factories etc. are nationalized. And an economy based on the Soviet five-year plans is incorporated.