Final answer:
More than 90 percent of Canadians live within 150 miles of the US border, implying a slightly lower percentage within 100 miles; specific figures for 100 miles are not provided, but it can be inferred to be a substantial majority of the population.
Step-by-step explanation:
The population distribution in Canada is highly concentrated near the US border due to various factors, including the physical geography of the country and economic ties with the United States. More than 90 percent of Canadians live within 150 miles of the US border, which suggests that a slightly lower percentage may live within the 100-mile range, although the specific figure is not provided in the provided reference information.
The tendency for Canadians to live close to the US border is partly because only a narrow band of southern and eastern Canada has the climate suitable for agriculture and widespread settlement. In addition, Canada's economy is closely tied with that of the United States. Moreover, the majority of Canada's urban centers and population are situated in provinces that border the United States, such as Ontario, Quebec, British Columbia, and those in the Prairies.