The direct causes of the American revolution include the following:
1. Colonists rights were restricted.
2. Colonists were not represented in parliament.
3. Colonists did not want England ruling from far away.
4. Colonists were frustrated with high taxation.
All these factors led to the war between the American colonists and the British. Great Britain put in place a lot of policies which did not favored the American colonists, this include the payment of tax which the American colonists violently rejected.
NIxon helped because he wanted to be nice.
<span>The war was dragging on with both sides becoming worn down, it looked as if it might have been a stalemate until the US stepped in and began fighting, which tipped the scales in the favor of the allies. The US mobilized quickly and often produce materials that were used and needed to win the war. Factories were able to easily convert to produce military goods and they met nearly all their production goals.</span>