Canada ( /ˈkænədə/) is a North American country consisting of ten provinces and three territories. Located in the northern part of the continent, it extends from the Atlantic Ocean in the east to the Pacific Ocean in the west, and northward into the Arctic Ocean. Spanning over 9.9 million square kilometres, Canada is the world's second-largest country by total area, and its common border with the United States is the longest land border in the world.

The Niagara Falls, located on the Niagara River draining Lake Erie into Lake Ontario, is the collective name for the Horseshoe Falls and the adjacent American Falls along with the comparatively small Bridal Veil Falls, which combined form the highest flow rate of any waterfall in the world and has a vertical drop of more than 165 feet (50 m). Horseshoe Falls is the most powerful waterfall (vertical height along with flow rate) in North America. Niagara Falls forms the international border between the Canadian province of Ontario and the U.S. state of New York, also forming the southern end of the Niagara Gorge. The falls are located 17 miles (27 km) north-northwest of Buffalo, New York and 75 miles (121 km) south-southeast of Toronto, between the twin cities of Niagara Falls, Ontario, and Niagara Falls, New York.

Algonquin Provincial Park is a provincial park located between Georgian Bay and the Ottawa River in Central Ontario, Canada, mostly within the Unorganized South Part of Nipissing District. Established in 1893, it is the oldest provincial park in Canada. Additions since its creation have increased the park to its current size of about 7653 square kilometres. For comparison purposes, this is about one and a half times the size of Prince Edward Island or the US state of Delaware and about a quarter the size of Belgium. The park is contiguous with a number of smaller, administratively separate provincial parks that protect important rivers in the area, resulting in total protected area somewhat larger than Algonquin's 7653 square kilometres.

Its size, combined with its proximity to the major urban centres of Toronto and Ottawa, makes Algonquin one of the most popular provincial parks in the province and the entire country. Highway 60 runs through the south of the park, while the Trans-Canada Highway bypasses it to the north.

Over 2,400 lakes and 1,200 kilometres of streams and rivers are located within the park. Some notable examples include Canoe Lake and the Petawawa, Nipissing, Amable du Fond, Madawaska, and Tim rivers. These were formed by the retreat of the glaciers during the last ice age.

Toronto (City) Board of Education v. O.S.S.T.F., District 15, [1997] 1 S.C.R. 487 is a leading decision of the Supreme Court of Canada on judicial review of administrative decisions. The Court held that the review of a just cause dismissal was patently unreasonable on the basis that the decision had no evidentiary basis.