10. Korean Peninsula (DMZ)
The Korean Peninsula was divided along the 38th parallel after World War II, with the Soviet Union occupying the north and the United States the south. This division led to the establishment of North and South Korea in 1948. The Korean War (1950-1953) further entrenched this split, resulting in the creation of the Demilitarized Zone (DMZ) in 1953 as a buffer between the two nations. The DMZ symbolizes the ideological divide of the Cold War and remains one of the most heavily fortified borders globally. Despite occasional diplomatic summits, tensions persist, with both nations maintaining substantial military presences and engaging in periodic standoffs (nationalgeographic.com).
