Do you write western Canada or Western Canada?

Answer 1

The two phrases "western Canada" and "Western Canada" are not entirely interchangeable. Depending on the context, either one of them or both of them may be correct.

If you are referring to Canada's western provinces in a concrete sense, a capital "W" is not appropriate, because the word "western" is just a descriptive adjective. If, however, you are referring to it as a political unit, the term becomes a collective proper noun and deserves a capital "W." However, don't forget general capitalization rules.

Ex:

• I visited western Canada. (geographical)
• I think the citizens of Western Canada have less say in the government than those of Eastern Canada. (political)
• Western Canada is a great place to live. (beginning of sentence, regardless of concrete use)

Answer 2

"Western Canada" is the correct way to write it, with "western" not capitalized unless it is used at the beginning of a sentence.