Detroit
Michigan.
I think that would be Detriot, Michigan if you look closely at the map.
Detroit is one. When I fly from Milwaukee to Niagara Falls I end up slightly south and east. 92 degree heading
Detroit, Michigan, is actually situated north of Windsor, Ontario. Therefore, you can drive south from Detroit, either across the bridge or through the tunnel, to get to Windsor, Ontario, Canada. That, however, is not the only example of driving south from the US to Canada. There are at least two examples of a highway running south from Alaska into Canada. In addition, it appears there may be a couple of examples of a road running in a southeasterly direction between Maine and New Brunswick.
Highways link cities - there are no major cities in the northern part of Canada
Mackenzie River
Hudson Bay is the answer to this problem.
The five major climate regions of Canada are the Northern region, the Pacific region, the Prairie region, the Core region, and the Atlantic region.
Detroit-Buffalo
Canadian Rockies are the major mountain range in the western Canada. The Rockies are a 3000 miles long range with Northern most edge in British Columbia, Canada and southern edge in the Northern New Mexico, USA.
In Canada there are many colleges a person can enter that will accept 3 AS levels. Most of the major colleges, however, will not accept only 3 AS levels.