The British North America Act went into effect on July 1, 1867, uniting Upper Canada (now called Ontario), Lower Canada (now Quebec), New Brunswick, and Nova Scotia into a British dominion. Canadians celebrate this day with parades and picnics, somewhat similar to Fourth of July festivities in the United States. In Detroit, Michigan, and Windsor, Ontario, which are on opposite sides of the Detroit River and are connected by a tunnel and the Ambassador Bridge, this is also one of the days on which the International Freedom Festival is held. Discuss