Territorial evolution of Canada

The Dominion of Canada was formed on July 1, 1867, when the British colonies of Canada, New Brunswick, and Nova Scotia were merged to form a single Dominion within the British Empire. Canada continued to expand across North America as other British colonies joined with or were ceded to Canada, eventually growing from four provinces to ten provinces and three territories. Politically, Canada gained increasing independence in the 20th century, eventually becoming a fully sovereign state in 1982.