Why did the United States use napalm and Agent Orange in its fight against the Vietcong?
http://www.google.com/search?q=napalm+agent+orange+uses&oq=napalm+agent+orange+uses&aqs=chrome..69i57.6628j0j7&sourceid=chrome&es_sm=119&ie=UTF-8
Read lots, but remember to write your answer in YOUR OWN WORDS!