The term "British North America" refers to the former territories of the British Empire in mainland North America. The term was first used informally in 1783, but it was uncommon before the Report on the Affairs of British North America (1839), called the Durham Report. These territories today form modern-day Canada and the Pacific Northwest of the United States.
English and later Scottish colonization of North America began in the 16th century in Newfoundland, then began further south at Roanoke and Jamestown, Virginia, and reached its peak when colonies had been established through much of the Americas.
The United States of America, upon acknowledgement of their sovereignty, acquired the part of Quebec south of the Great Lakes by the Treaty of Paris (1783); at the same time Spain gained West Florida and regained East Florida.