What concept does the phrase 'Canada mania' refer to in the context of the passage?

The phrase 'Canada mania' refers to a widespread belief about wealth in Canada. This concept captures the enthusiasm and fascination that people have regarding the prosperity and opportunities that Canada is perceived to offer. It indicates a broader cultural phenomenon where there is a strong allure related to the economic prospects available in Canada, which can lead to increased interest and movement towards the country.

This interpretation aligns with the potential associations people make when they think about Canada’s resources, quality of life, and job opportunities. The phrase suggests more than just general excitement; it's tied to the perception of Canada as a land of wealth and opportunity, which influences people's thoughts and decisions about Canada.