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It’s marred a bit by several small mechanical errors, and there are a few points where I disagree, but this brief article by the prominent Austro-American sociologist of religion Peter Berger offers an interesting, useful, and very clear survey of the intellectual/cultural history of American Evangelicalism over the past century or so:
http://www.the-american-interest.com/2016/01/13/the-long-road-to-harvard/