Christians are by far the largest religious group on the planet, and
the religion has gone truly global over the past century, according to a
new report out Monday, which finds some of the world's biggest
Christian communities in surprising places.
Europe was the clear center of world Christianity one hundred years
ago, but today the Americas are home to more than a third of all
Christians. In fact, the United States has the world's largest Christian
population, of more than 247 million, followed by Brazil and Mexico.
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