What is the most popular religious group in the United States? Explain how this differs from Canada. Why do you think the most popular religious groups in the two countries are different?

Mormons are by far the most religious of the major religious groups in the U.S., with 74% classified as highly religious. Protestants, Muslims and Catholics are more of a mix of highly and moderately religious adults, while Jews and those who identify with another non-Christian religion are the least religious.

Explanation:

The most popular religion in the U.S. is Christianity, comprising the majority of the population (73.7% of adults in 2016). Christianity is the largest religion in Canada, with Roman Catholics having the most adherents. Christians, representing 67.3% of the population in 2011, are followed by people having no religion with 23.9% of the total population.

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the density would be a smaller number.