What impact has the border between north korea and south korea had upon life in both countries

it creates a cordial relationship between the two nations

Explanation:

The establishment of the border connection has been observed as part of the general improvement relationship between the two nations( North and South Korea) in the early part of this century.

The border is also called The Military Demarcation Line (MDL). Sometimes, it may also be referred to as the Armistice Line. MDL is the land border or demarcation line between North Korea and South Korea. What you'd find on either side of the line is the Korean Demilitarized Zone (DMZ). Both the military demarcation line and the Korean demilitarized zone were formed and managed by the Armistice at the end of the War between the two nations, the war took place in 1953.