Canada was founded on July 1, 1867. The Constitution Act in that year formed the nation of Canada, which, at the time, consisted of four provinces: Ontario, Quebec, Nova Scotia and New Brunswick.
Modern Canada is comprised of 10 provinces and three territories. The six provinces that were not a part of the original four are Alberta, British Columbia, Manitoba, Newfoundland and Labrador, Prince Edward Island and Saskatchewan. The three territories are the Northwest Territories, Nunavut and Yukon. Canada is the second largest country in the world in terms of area. It also shares the longest contiguous border in the world with the United States.