When was the Dominion of Canada established?

Canada was formed in 1867.

Canada was formed partly because of economic needs. Provinces could easily trade with each other giving people more places to sell their products.

As a country, Canadians could also more easily defend themselves against threats from other countries. In the 1860's, people in Canada were concerned about attack from the United States, especially since Canada was a British colony at that time. The Americans were not on good terms with the British.