North Korea
Japan tried to suppress Korean traditions and culture and ran the economy primarily for its own benefit. Korean resistance groups known as Dongnipgun (Liberation Army) operated along the Sino-Korean border, fighting guerrilla warfare against Japanese forces. Some of them took part in allied action in China and parts of South East Asia. One of the guerrilla leaders was the communist Kim Il-sung, who later became the first leader of North Korea.
Tanks of South Korea
Despite the initial plan of a unified Korea in the 1943 Cairo Declaration, escalating Cold War antagonism between the Soviet Union and the United States eventually led to the establishment of separate governments, each with its own ideology, leading to Korea's division into two political entities in 1948: North Korea and South Korea. In the North, a former anti-Japanese guerrilla and communist activist, Kim Il-sung gained power through Soviet support. In the South, elections supervised by the United Nations were held, a Republic of Korea was declared, and Syngman Rhee inaugurated as its first president. In December, the UN General Assembly declared this "a lawful government" and "the only such government in Korea."