NVA & VC vs US, ROK, NZ, Australia, RVN, PI, and Thailand.
The Vietnam war. Or the Resistance War Against America.
Korea, Australia, Phillipines, and Canada all pitched in during the Vietnam war alongside the U.S. effort to preserve democracy in South Vietnam.
At least six other nations.
The United States did get involved in the Vietnam war because of communism in Vietnam.
The most Americans died in Vietnam which was also the longest war that America was involved in.
The UK was not involved in the Vietnam war - it was the USA!
The U.S government decided to get involved in the Vietnam war because the believed after the cold war that communism was a very serious issue that must be adressed first hand. America has also singed itself into SEATO (an agreement between many other countries who were also against communism). This meant America had no other options but enter the war in Vietnam.
A strong reluctance to become involved in future wars.
They weren't.
Yes. Vietnam was a French colony. They lost a Vietnam War and were thrown out of Vietnam before America tried to win a war in Vietnam. America also lost a Vietnam War.
The Vietnam War made America stronger.