In 1867, the Dominion of Canada was created with four provinces: Nova Scotia, New Brunswick, Quebec and Ontario. This marked the birth of Ontario as a province of Canada and gradually over the last century, Ontario grew and changed. Mineral mining was established in Northern Ontario and lead to the expansion of the north and such cities as Sudbury, Cobalt and Timmins. The Ford Motor Company of Canada set up its headquarters in Ontario in 1904 followed by General Motors Canada in 1918. Ontario Hydro was also founded in order to harness Ontario’s water and electricity potential.

Today, Ontario is Canada's leading manufacturing province. Toronto, the capital of Ontario, is the economic centre of Canada and it is home to the financial sector, the banking industry, many product distribution centers, the IT industry, and much more.