Laos was neutral. Nationalist China (Taiwan) was an ally but did NOT send men to Vietnam. If Taiwan had gotten involved in Vietnam, Red China might have gotten involved too. Red China and Nationalist China were bitter enemies in the 1960's.
'55.
Vietnam.
1964-1975
Great Britain did not send troops to Vietnam during the war.
The UN didn't fight in the Vietnam War; the UN was in Korea.
Invitation by the Republic of South Vietnam.
To stop the spread of communism:))
easy YES!
France was the primary European nation involved with Indo-China prior to the US's entry into Vietnam.
When Nixon ordered "military trainers" to Vietnam, the U.S. then started to become actively involved in Vietnam combat.
The US became involved in the Vietnam War in an attempt to stop the spread of Communism. The US worried that if South Vietnam fell, it would create a domino effect. The war lasted from 1955 to 1975.