Between 1965 and 1968, the Vietnam War was fought primarily in the jungle.
The Vietnam War constituted a long, and costly conflict that pitted the communist government of North Vietnam against South Vietnam and its main ally, the United States.
It was the second of the Indochina Wars and was officially fought between North Vietnam and South Vietnam.
The Vietnam War claimed the lives of more than than 3 million people from which more than half were Vietnamese civilians.
The major way in which border areas of the west were affected by the mixture of people is that a plethora of immigrants from all over the world wanted to expand to the west in order to settle--meaning that people from all backgrounds often fought over land and job opportunities.
The Kingdom of Prussia (aka "Germany") and the Austrian Empire joined together to seize the territory of Schleswig-Holstein from Denmark due to the regions majority German population.