How did the Treaty of Paris of 1763 change control of the Toronto region?

The Treaty of Paris of 1763 fundamentally changed control of the Toronto region by formalizing the transfer of French territories in North America to Great Britain.1

Prior to this treaty, the region had been a site of intense competition between French and British interests, characterized by the establishment of French fur trading posts, such as Fort Rouillé, which was burned down during the escalating conflict in 1759. Following the defeat of French forces and the subsequent signing of the treaty, France ceded its claims to Canada and all lands east of the Mississippi River to the British. This effectively ended French political and military power in the region, establishing British control over what would eventually become Ontario and the broader Canadian landscape.123