Which president of the u. s. signed the declaration of surrener of the vietnam war and when?

Pres. Richard Nixon

Explanation:

In Paris, Pres. Richard Nixon signed a Peace Treaty in 27 January 1973 after rounds of Peace talks between the North Vietnam, South Vietnam and the White House. An agreement was made including ceasing fire, releasing of P. O. W. s, etc.

Then the American troops were withdrawn from South Vietnam. The war continued until 30 April 1975 with the Fall of Saigon, when the country was reunited under communism.