How was the Vietnam war different from previous wars ?

Ostensibly, we fought the Vietnam War to keep the southern part of the country--tenuously democratic (but with rigged elections)--from becoming part of the communist north. ... Another aspect that was unique to this war is that we generally did not take, occupy, and control land--our strategy was to kill the enemy.

the phenomenon that would be cited as evidence of increased economic interdependence between europe and the americas is  the development of mercantilism.

this theory suggests that the wealth of a country depends on its economic assets, or capital.

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i need the diagram.