Canada is close to 3000km across, that is a rough approximation
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No. It's not even close.
According to the Atlas of Canada, the distance east to west from the most easterly point in Canada (Cape Spear) to the most westerly point (141º West Longitude, the Yukon - Alaska boundary) is 5,514 kilometres.
East Canada and West Canada of the Province of Canada was divided along religion and language with English dominating in West Canada and French in East Canada.
Canada East :)
West
Canada East and Canada West were not "created." They were merely geographical designations within the pre-Confederation Province of Canada.
Ottawa is in the east.
Canada East and Canada West were the former Lower Canada and Upper Canada respectively. Lower Canada and Upper Canada were united into the Province of Canada in 1841 by the British Parliament. The terms Canada East and Canada West were terms of description, not names of separate entities.
Canada East and Canada West
Montana's northern border with Canada is 545 miles. The southern portion of Montana is approximately 559 miles long (east to west).
The South Atlantic.
4850km
East
The ocean that is on the east side of the US and Canada is the Atlantic Ocean.