Final answer:
Ontario is the province with Toronto as its capital. Toronto serves as the provincial capital, while Ottawa is the national capital of Canada.
Step-by-step explanation:
The province that has Toronto as its capital is Ontario. Ontario is not only the most populous province in Canada, but it also has a significant position in the country's political and economic landscape. With nearly 39 percent of Canada's population residing in Ontario, this province is often referred to as South Canada due to its southernmost location among Canadian provinces. It's important to note that Ottawa serves as the national capital of Canada, whereas Toronto is the provincial capital of Ontario. Established in 1867 when the British Parliament passed the British North American Act, Ontario was part of the original formation of the Dominion of Canada.