Protestant Christians Church of England.
Prior to the Revolution, most immigrants to New England were English Protestants who were not allowed to practice their (non-Anglican) version of religion.
Islam
Most people in the middle east practice islam
Most Taiwanese practice a combination of Buddhism, Confucianism and Taoism.
Many people are Anglican
The Church of England is the established religion of the United Kingdom and it may still be the most popular religion in England. Many people in England now are atheist or agnostic.
Judaism (75%).
Christianity, I guess
Islam
Christianity, which is the majority religion in all of South America.
Most people in England are Christians (72 %)
Roman Catholic