In America fundamentalism is a movement within Protestantism that was organized immediately after World War I in opposition to "modernism," which included liberal theology primarily, and also Darwinism and secularism. A subgroup of evangelicalism, fundamentalism staunchly affirmed with evangelicals "fundamentals of the faith," including the deity of Christ, his virgin birth, his bodily resurrection, and his substitutionary atonement. What distinguishes fundamentalists from other evangelicals is their strident opposition to modernism. They are, to quote George Marsden, "militant anti-modernist evangelicals."