Pusan perimeter
USA
General Douglas MacArthur
It furnished bases and supply deports to American forces
no \
Korean war
Either the Korean War or the Vietnam War. Both were in Asia.
They helped South Korea
See the list on website: Korean War
UN forces confronted north korean forces to a stalemate from1950 to 1953
North Korean forces INVADED South Korea.
North Korean invading forces
Fierce fighting among US and UN forces against North Korean and Chinese forces