Final answer:
The Korean DMZ is a demilitarized buffer zone between North and South Korea that was established in 1953 after the Korean War. It is neither the peace treaty between the two Koreas, a political party, nor a capital city, but a heavily fortified border intended to prevent future conflicts.
Step-by-step explanation:
The Korean DMZ, or the Korean Demilitarized Zone, is an area that acts as a buffer zone between North Korea and South Korea. Established after the Korean War in 1953 through an armistice, the DMZ is approximately along the 38th parallel and is about 250 kilometers (160 miles) long and 4 kilometers (2.5 miles) wide.
This zone is heavily patrolled and has become one of the most militarized borders in the world, with both Koreas agreeing that no military personnel or assets would be allowed within the DMZ to prevent future conflict.
The creation of the DMZ was also a result of diplomatic negotiations that aimed to create a pace where hostilities could be avoided in the future. The United States also has thousands of soldiers stationed in South Korea, near the DMZ, as a deterrent against potential aggression.