The U.S. was attempting to keep Communism from spilling over from North Vietnam to South Vietnam (one of the other posters referenced the "Domino Theory," which suggested that if one country became Communist, another could become Communist, and so on and so forth, like toppling dominoes).
We first got involved in the 50s by providing relatively small amounts of economic and military aid to the French, who were involved in fighting in Vietnam before we were. When the French failed and a Communist government in North Vietnam arose, Eisenhower sent "advisors" to South Vietnam to train their military to resist the North's.
In the 60s, JFK sent Green Berets/special operations forces clandestinely into Vietnam to train counterinsurgency forces there. By the time JFK was assassinated, we had over 10,000 advisors ("advisors" generally equals "special forces") in Vietnam, and over 100 Americans had already been killed.
In 1964, the Gulf of Tonkin incident occurred in waters adjacent to North Vietnam, where an American warship and a North Vietnamese vessel exchanged gunfire. There was controversy as to who shot first, but it eventually led to a push for Congress to approve the Gulf of Tonkin Resolution, which allowed for further U.S. military escalation into Vietnam. There was no formal declaration of war, and military forces just kept getting incrementally larger and larger until their peak in the late 60s.
Support of the French efforts in Indochina. US involvement in Vietnam began long before the actual Vietnam War.
The cold war/communist aggression.
Vietnam
The battle of Dien Bien Phu led to the direct involvement of the US in Vietnam in the hopes of curbing communist expansionist policies .
American involvement in Vietnam actually dates back to 1953, at the request of the French. The Gulf of Tonkin Incident is what led to an escalation of US involvement in 1965.
which resolution allowed president johnson to increase us involment in vietnam
Part of the Cold War; communist containment.
The TET offensive of 1968 is considered by many to have been the beginning of the US's end of involvement in Vietnam.
Vietnam
The battle of Dien Bien Phu led to the direct involvement of the US in Vietnam in the hopes of curbing communist expansionist policies .
American involvement in Vietnam actually dates back to 1953, at the request of the French. The Gulf of Tonkin Incident is what led to an escalation of US involvement in 1965.
the Vietnam War. Despite implementing significant domestic policies like the Great Society, his decision to escalate U.S. involvement in Vietnam led to a prolonged and costly war that resulted in a high number of American casualties. This led to widespread protests and public discontent, causing Johnson's popularity to decline significantly.
Vietnam was part of the cold war.
which resolution allowed president johnson to increase us involment in vietnam
it led to increased u.s. involvement in vietnam - apex
Communist infiltration into South Vietnam.
Britain's involvement in the war led to the involvement of Canada, because it's a Commonwealth Nation.
The French Indochina War most likely led to the (so called) American Vietnam War. Because the French war divided up the country into TWO nations; North & South Vietnams. When the communist led North Vietnam attempted to take over (conquer) South Vietnam... this led to US involvment.
Part of the Cold War; communist containment.