Final answer:
The Treaty of Paris in 1763 granted Great Britain vast territories in North America, marking the end of French colonial presence in the region. Spain ceded Florida to Great Britain but received Louisiana, and the native populations lost their ability to leverage European powers against each other. The British were left with hostile Native American tribes and colonies embracing their increased security.
Step-by-step explanation:
The Treaty of Paris of 1763 concluded the Seven Years' War, reshaping the territorial landscape of North America. As a result of the treaty, the British gained enormous territories, becoming the dominant power in eastern North America. The British received everything east of the Mississippi River, including Spanish Florida, while Spain lost Florida but was compensated with the Louisiana territory west of the Mississippi. France suffered the most significant losses, forfeiting all its North American possessions except for a few Caribbean islands. The treaty significantly impacted native populations, who had previously balanced European powers against each other and now faced British hegemony.
However, the British did not manage to gain the allegiance of the Native American tribes, who had been allied with the French, resulting in ongoing hostilities. With the British victory, the colonial settlers celebrated their newfound security, symbolized by the singing of "Rule, Britannia!" Great Britain emerged as a major global empire, with territorial acquisitions extending beyond North America to the West Indies, Indian trade posts, and regions in Africa.