Final answer:
The Treaty of Paris of 1763 ended the Seven Years' War with Britain gaining extensive territories east of the Mississippi River and establishing itself as the dominant power in eastern North America. France ceded its territories, and Spain received Louisiana but lost Florida. The reshaped map incited ongoing resentment among Native American tribes.
Step-by-step explanation:
The Treaty of Paris of 1763 ended the Seven Years' War and the French and Indian War in America, resulting in significant territorial changes in North America. Great Britain emerged as the major colonial power, gaining control of territories east of the Mississippi River, including Spanish Florida, while Spain acquired Louisiana and France lost all its North American possessions except some Caribbean islands. The treaty also resulted in simmering hostilities with France's Indian allies, who had not been consulted and did not recognize the European claim over their territories.
Before the war, multiple European powers, including France, Spain, and Britain, held various territories. After the war, North America saw a significant change: Britain extended its domain across the eastern portion of the continent, while Spain's holdings were reduced, effectively ending the French territorial presence in the region.