Title: Vietnam War
Content:  Amendment, passed by the U.S. Congress on 15 August 1973, officially ended direct U.S. military involvement. The Peace Accords were broken almost immediately, and fighting continued for two more years. Phnom Penh fell to the Khmer Rouge on 17 April 1975 while the 1975 Spring Offensive saw the capture of Saigon by the PAVN on 30 April; this marked the end of the war, and North and South Vietnam were reunified the following year. The scale of fighting was enormous. By 1970, the ARVN was the world's fourth largest army, and the PAVN was not far behind with approximately one million regular soldiers. 
Title: 1975 in the Vietnam War
Content:   1975 marked the end of the Vietnam War, sometimes called the Second Indochina War or the American War. The North Vietnamese People's Army of Vietnam (PAVN) launched the Spring Offensive in March; the South Vietnamese Army of the Republic of Vietnam (ARVN) was quickly defeated. The North Vietnamese captured Saigon on April 30, accepting the surrender of South Vietnam. In the final days of the war, the United States, which had supported South Vietnam for many years, carried out an emergency evacuation of its civilian and military personnel and more than 130,000 Vietnamese. At the beginning of the Spring Offensive the balance of forces in Vietnam was approximately as follows; North Vietnam: 305,000 soldiers, 600 armored vehicles and 490 heavy artillery pieces in South Vietnam and South Vietnam: 1.0 million soldiers, 1,200 to 1,400 tanks and more than 1,000 pieces of heavy artillery. The capital city of Cambodia, Phnom Penh, was captured by the Khmer Rouge on April 17. On December 2 the Pathet Lao took over the government of Laos, thus completing the communist conquest of the three Indochinese countries.
Title: 1975
Content:  troop commitment to South Vietnam. ; April 29 – Vietnam War: ; Operation Frequent Wind – Americans and their allies are evacuated from South Vietnam by helicopter. ; North Vietnam concludes its East Sea Campaign by capturing all of the Spratly Islands that were being held by South Vietnam. ; April 30 – The Vietnam War ends with the Fall of Saigon: The Vietnam War concludes as Communist forces from North Vietnam take Saigon, resulting in mass evacuation of the remaining American troops and South Vietnam civilians. As the capital is taken, South Vietnam surrenders unconditionally and is replaced with the temporary Provisional Government. 
Title: United States in the Vietnam War
Content:  July 1, 1972. ; August 29, 1972 - Nixon announces the further withdrawal of U.S. troops in South Vietnam to only 27,000 by December 1, 1972. ; November 7, 1972 - Nixon wins re-election. ; January 22, 1973 - Lyndon B. Johnson dies. ; January 27, 1973 - U.S. troops are planned to be withdrawn from South Vietnam in 60 days due to the signing of the Paris Peace Accords. North Vietnam and Nixon also agree to withdraw troops from Cambodia and Laos. ; March 29, 1973 - The last troops from United States of America are getting out of Vietnam. ; August 9, 1974 - Richard Nixon resigns due to the Watergate scandal and is succeeded by Gerald Ford. 
Title: United States–Vietnam relations
Content:  time when increasing numbers of North Vietnamese-trained soldiers were moving in South Vietnam, the first increment of United States combat forces was introduced into the South and sustained bombing of military targets in North Vietnam was undertaken. Nearly eight more years of conflict occurred before the intense involvement of the United States ended in 1973. An "Agreement Ending the War and Restoring Peace in Vietnam" was signed in Paris on January 27, 1973, by Washington, Hanoi, Saigon, and the Provisional Revolutionary Government, representing the Vietnamese communist organization in the South, the Viet Cong. The settlement called for a cease-fire, withdrawal of all 
Title: Vietnam
Content:  over 3,000 civilians at Huế. Facing an increasing casualty count, rising domestic opposition to the war, and growing international condemnation, the US began withdrawing from ground combat roles in the early 1970s. This also entailed an unsuccessful effort to strengthen and stabilise South Vietnam. Following the Paris Peace Accords of 27 January 1973, all American combat troops were withdrawn by 29 March 1973. In December 1974, North Vietnam captured the province of Phước Long and started a full-scale offensive, culminating in the fall of Saigon on 30 April 1975. South Vietnam was ruled by a provisional government for almost eight years while under North Vietnamese military occupation.
Title: Vietnamese boat people
Content:  The Vietnam War ended on April 30, 1975 with the fall of Saigon to the People's Army of Vietnam and the subsequent evacuation of more than 130,000 Vietnamese closely associated with the United States or the former government of South Vietnam. Most of the evacuees were resettled in the United States in Operation New Life and Operation New Arrivals. The U.S government transported refugees from Vietnam via aircraft and ships to temporarily settle down in Guam before moving them to designated homes in the contiguous United States. Within the same year, communist forces gained control of Cambodia and Laos, thus engendering a steady flow of refugees fleeing all three countries. In 1975, President Gerald Ford signed the Indochina 
Title: Indochina Wars
Content:  United States, with virtually complete destruction of the NLF forces combat capability, it was, by the intensity of the combats, the contradiction it implied with recent reports of withdrawals of US troops and status of the war, also a turning point in American voter opposition to U.S. support for their Cold War Vietnamese allies. The United States began withdrawing troops from Vietnam in 1970, with the last troops returning in January, 1973. The Paris Peace Accords called for a cease-fire, and prohibited the North Vietnamese from sending more troops into South Vietnam - although the North Vietnamese were permitted to continue to occupy 
Title: Vietnam War
Content:  the Paris Peace Accords on 27 January 1973. This officially ended direct U.S. involvement in the Vietnam War, created a ceasefire between North Vietnam/PRG and South Vietnam, guaranteed the territorial integrity of Vietnam under the Geneva Conference of 1954, called for elections or a political settlement between the PRG and South Vietnam, allowed 200,000 communist troops to remain in the south, and agreed to a POW exchange. There was a sixty-day period for the total withdrawal of U.S. forces. "This article", noted Peter Church, "proved… to be the only one of the Paris Agreements which was fully carried out." All US forces personnel were completely withdrawn by March 1973.
Title: North Vietnam
Content:  countries and North Vietnam supported the Pathet Lao in Laos and the Khmer Rouge in Cambodia against their respective US-backed governments. By 1973 the United States and its allies had been forced to withdraw from the war, this left South Vietnam alone and it was swiftly overrun by the superior Northern forces. The Vietnam War ended on 30 April 1975 and saw South Vietnam come under the control of a Provisional Revolutionary Government, which led to the reunification of Vietnam on 2 July 1976, creating the Socialist Republic of Vietnam of today. The expanded Socialist Republic retained North Vietnam's political culture under Soviet influence and continued its existing memberships in international organisations such as COMECON.

Question: when does the vietnam war end?
Answer: 1970s.