Yo Kass answered
During World War II, North Korea was liberated from Japanese rule by Soviet forces who went on to govern the northern division of the country. Following the war, Soviet leaders therefore had a major influence in the development of North Korea as a country, and were intrinsic to its becoming a socialist state.
At the beginning of the twentieth century, Korea found itself under Japanese rule. This rule began with the Japan-Korea treaty of 1910, and didn't end until allied forces liberated Korea towards the end of the Second World War in 1945. The country was then effectively divided into two 'ocupation zones', with the north occupied by the Soviet Union. This is the main cause for the rise of communism in North Korea.
The division of Korea
The two occupational zones that were created in the aftermath of World War II were intended to be temporary divisions based along the 38th parallel north - a circle of latitude 38 degrees north of the equator that dissected the Korean peninsula. The intention was that China, the Soviet Union, United States and United Kingdom would oversee the development of a national government for Korea. However, and due mainly to the cold-war politics of the time, this became impossible and two separate states were formed as social, economic and politically polar opposites - with the North aligned to communist Soviet Union and China.
In 1950 the Korean war broke out when North Korea invaded Southern territory, and the two countries still consider themselves to be in a state of 'ceasefire' to this date.
In 1950 the Korean war broke out when North Korea invaded Southern territory, and the two countries still consider themselves to be in a state of 'ceasefire' to this date.