The effect of Britain passing the Townshend act:
colonists boycotted taxed goods in protests and daughters of liberty produced substituted goods
The effect of Britain sending a warship to New England:
More tension grew between Britain and the colonies resulted in the American revolution
Albert Bandura's notion that people are affected by their environment but can also influence that environment is known as reciprocal determinism. It is an idea that the influence of the children and the environment they are in is a two way flow. The environment would affect the child and the child would likewise affect the environment.
I would agree that the main reason was that we wanted to protect a country from communism. I often wonder though if the Vietnam conflict was not more of a conflict between USSR and the United States than it was a conflict between North and South Vietnam.
-IrWilliams