The ground war, in the Vietnam War, WAS FOUGHT in South Vietnam. Therefore, South Vietnam entered the war from the very beginning...which is when it started in either the late 1950's or 1961, depending on what historical reference you are using.
North Vietnam (NVA) fighting South Vietnam (ARVN) with the US/allies helping out the south.
Which types of techniques did WHICH Vietnam use? There were two Vietnams: North Vietnam and South Vietnam.
During the Viet War from '55 thru '75, there were two Vietnams: North Vietnam & South Vietnam; they were divided at the 17th parallel.
Impact: North won; South ceased to exist after 1975.
Manpower.
Vietnam is a communist country since 1975. Prior to 1975 there were two Vietnams; a NORTH and a SOUTH Vietnam. Those two nations fought from about 1955 until 1975, with the US supporting South Vietnam; which was defeated by force of arms on 30 April 1975.
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.
I know of no illegal "rugs" that entered south Vietnam but there were illegal Drugs that did enter Vietnam.
Yes, and the more they could get, the more they wanted.
To stop north Vietnam from spreding communism in entering south Vietnam To stop north Vietnam from spreding communism in entering south Vietnam
north Vietnam invaded south vietnma
Vietnam veterans memorial, Vietnams womens memorial, district of Columbia war memorial