Both sides used propaganda to promote their ideologies (communism – USSR and capitalism – USA)
The origins of the Korean War:
Korea divided along the 38th parallel after Japan's loss in 1945
Korean soldiers in the north surrendered to Soviet forces, in the south to American forces
Division supposed to be temporary for UN-organised elections
Kim Il-Sung took power in the North, Syngman Rhee won elections in the South
Seoul became the capital of South Korea, Pyongyang of North Korea
Both leaders wanted to reunify the country under their own ideologies
Kim Il-sung 1912-1994:
Ruler of North Korea from 1943 until his death
Founding member of the Young Communist League of Korea in 1927
Lived in the USSR from 1941-1945
Became a Major in the Soviet Army
Syngman Rhee:
Imprisoned in 1897 for protesting against the Korean royal family
Elected President of Korea in 1919
Became the first President of South Korea after WWII
China:
Became communist in 1949
Mao Tse-Tung defeated the nationalists
Americans feared the spread of communism in Asia
North Korean invasion build-up:
Both sides claimed rightful rulership of the whole of Korea
Kim Il-Sung believed South Koreans would welcome a North Korean invasion
Stalin initially thought the time was not right for an invasion
In 1950, Stalin decided the time was right
USSR supplied tanks, weaponry, and aircraft to North Korea
Stalin gave Kim Il-Sung permission to invade in April 1950
The fear of communism spreading across Asia and countries falling to communism one by one, like dominoes
By 1946, most of Eastern Europe was communist
Truman announced the "Truman Doctrine" in 1946, stating that the USA would try to "contain" communism from spreading further
In 1949, China became communist and began supporting communist rebels across Asia
Truman was concerned about South Korea going communist after the North Korean invasion, as it could lead to communism spreading to other countries like Vietnam, Laos, Japan, or India
This would threaten American influence and business in the region
The second "Red Scare" in the USA during the late 1940s and early 1950s
The nuclear arms race between the USA and the USSR heightened fear of communism and the USSR in the USA
Senator Joseph McCarthy fueled the fear of secret communists in the USA, trying to overthrow the government
Presidential elections in 1948 and Congress elections in 1950 led politicians to talk tough about communism to appeal to voters
Truman's decision to go to war may have been influenced by the desire to appear tough on communism to American voters
The Korean War was part of the global war between the USSR and the USA
After 1945, the USSR and the USA were rivals across the world
The USA entered the Korean War in 1950 to act against the USSR and prevent the spread of its influence
Concerns about trade and business influenced the USA's stance on communism in Asia
Communist countries potentially refusing to trade with the USA was a worry
The spread of communism to Japan, a crucial ally and trading partner, was a major concern for American businessmen and politicians
The North Korean invasion in June 1950 was the trigger cause for the Korean War
Kim Il Sung's troops occupied most of South Korea, leading Truman to send military support and pressure the UN to take action
This event was the immediate cause that initiated the war, not a longer-term cause
Capitalism:
Free elections involving different parties
Most land, industry, and businesses were privately owned
Freedom was the most important idea
Extremes of poverty and wealth
Communism:
Land and industry owned by the state
Profits shared out evenly
Equality was the most important idea
Society more equal, but lives tightly controlled by the government