Where is Niagara Falls located?

Niagara Falls sits on the international boundary between Ontario and the United States . Discover Canada describes the broader geography in its Ontario chapter: There are five Great Lakes located between Ontario and the United States: Lake Ontario, Lake Erie, Lake Huron, Lake Michigan (in the U.S.A.) and Lake Superior, the largest freshwater lake in the world. Niagara Falls is the dramatic drop where the Niagara waters flow from Lake Erie north to Lake Ontario along that very border.

Discover Canada mentions Niagara Falls directly in a War of 1812 passage. The guide writes that Major-General Sir Isaac Brock "captured Detroit but was killed while defending against an American attack at Queenston Heights, near Niagara Falls, a battle the Americans lost." So the falls are also the site of a Canadian victory during the war — and Queenston Heights, the battle's location, sits on the Canadian (Ontario) side of the falls.

The Niagara region around the falls is also Ontario's wine country. Discover Canada writes that "the Niagara region is known for its vineyards, wines and fruit crops." So one stretch of the Ontario-United States boundary contains the world-famous waterfall, the war-history battle site of Queenston Heights, and Canada's most famous wine region all in one corridor — and all on the Ontario side or running along it.

The wider Ontario profile gives more context. Discover Canada describes Ontario as Canada's most populous province, with Toronto as "the largest city in Canada and the country's main financial centre." Together with Quebec, Ontario produces "more than three-quarters of all Canadian manufactured goods." Niagara Falls sits at the southern edge of that economic powerhouse, on the border with the United States — and the falls' U.S. side falls within the state immediately south of Lake Ontario.

The question is testing whether new citizens know which border Niagara Falls straddles. Geographically, the falls sit between Ontario and the United States — the U.S. side being the state immediately south of Lake Ontario. The right test answer matches that.

The wrong answer choices each pick a wrong pairing. Ontario and Quebec are both Canadian provinces — there is no international boundary or major waterfall between them. British Columbia and the state of Washington share the Pacific coast border, but Niagara Falls is in the east. New Brunswick and the state of Maine share an Atlantic boundary, but again, that is far from the Niagara region.