Final answer:
Pontiac's Rebellion, led by Native American tribes who were former allies of the French, was a response to the French loss in the French and Indian War and the subsequent British encroachment on their lands.
Step-by-step explanation:
The rebellion that occurred in reaction to the French loss in the French and Indian War and which attacked British settlements was known as Pontiac's Rebellion. After the 1763 Treaty of Paris ended the conflict, Native American tribes who had sided with the defeated French, such as Pontiac's confederacy, organized resistance against British colonial encroachment. This marked a significant post-war tension as settlers interpreted the rebellion along increasingly racial lines.
Pontiac's Rebellion highlighted the dissatisfaction of Native American tribes with British policies post-war. British victory in the war seemed to pave the way for westward colonial expansion, something Native American tribes sought to resist given British encroachment on their lands. The uprising was a direct response to the loss of French military support, which had long been a bulwark for Native American tribes against the expansionist British colonists.