<span>cautiously I believe correct me if I'm wrong.</span>
When the Japanese empire was dismantled at the end of World War Two, Korea fell victim to the Cold War. It was divided into two spheres of influence along the 38th parallel. The Americans controlled south of the line - the Russians installed a communist regime in the north, later ceding influence to China.
The unit is called a newton (kg.m/sec2), written as NT or N.
In the 1972 Olympics, Mark Spitz won 7 gold medals for 100m Butterfly, 100m Freestyle, 200m Butterfly, 200m Freestyle, 4×100m Freestyle Relay, 4×100m Medley Relay, and 4×200m Freestyle Relay.