What impact did the french and indian war have on colonial america?

United them against a common enemy.

Explanation:

The war had different effect on the American colonists as it helped them to unite against a common enemy. Before the war there was no reason for them to unite and they were in mutual distrust, but during the war they learned that together they could be a power to be reckoned with.

It had adverse impact on the British Empire as the war enlarged the Britain's debt and generated resentment towards the colonists among British leaders. They were unsatisfied with the assistance offered by the colonists  during the war. And made plans to exercise more control over the government of colonies. These plans led to the American revolution.

the answer is option a.