On 1 March 1941, the Kingdom of Bulgaria signed the Tripartite Pact, and officially became a member of the Axis. Following the German invasion of Yugoslavia and Greece in … See more

The PRB adopted a centrally planned economy, similar to those in other COMECON states. In the mid-1940s, when collectivisation began, Bulgaria was a primarily agrarian … See more

• Bulgarian cosmonaut program
• Captive Nations See more

• The Cold War International History Project's Document Collection on Bulgaria During the Cold War
• "Bulgarian Trade with Developed Non-Communist Countries". 26 February 2012. Archived from the original on 26 February 2012. Retrieved 6 … See more

The constitution was changed two times, with the Zhivkov Constitution lasting the longest. According to article 1, "The People's Republic of Bulgaria is a socialist state, headed by the working people of the village and the city. The leading force in society and politics … See more

In 1946, the military rapidly adopted a Soviet military doctrine and organization. The country received large amounts of Soviet weaponry, and eventually established a domestic military vehicle production capability. By the year 1988, the See more

Culture in PRB was strictly regulated by the government, although there were some periods of liberalization (meaning entrance in Bulgaria of Western literature, music, etc.). The … See more