What were the main causes and effects of the American Revolution?

Main cause were British policy in colonies which included heavy taxation, while main effect was the creation of independent of United States.

Explanation:

After French and Indian War Britain continued to impose heavy taxes on colonists, and according to them did not respect their guaranteed rights. Although, they opposed this British ruler and Parliament were deaf to their pleas. That is why war started. It led to American Independence and lost of these territories for Britain.

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explanation:

the addition to geographic boundaries that might have  kept the people of the huang river civilization from traveling to far distance region is that they had learned about the other river valley civilizations but feared contact would bring invasion.

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