American Koreaball is a military countryball after WW2.
The country in this period was plagued by political and economic chaos, which arose from a variety of causes. The aftereffects of the Japanese occupation was still felt in the occupation zone, as well as in the Soviet zone in the North.
Despite not getting her independence, she liked hanging out with USAball. Then, South Koreaball or the Republic of Koreaball was officially proclaimed on August 15, 1948, following constitutional assembly and presidential elections, finally giving South Koreaball her independence. USAball finally withdrew from Korea in 1949, for now.