A divided country is one that is split into two or more separate entities, often due to political or ideological differences. In this case, the two countries referenced are KOREA and the USA. KOREA is a country located in East Asia, which has been divided since 1945 when it was split into North and South KOREA. The USA is a country located in North America, which has been divided since 1861 when the American Civil War broke out between the Union and Confederate states.