Unpredictable Gospel: American Evangelicals and World Christianity, 1812-1920The astonishing growth of Christianity in the global South over the course of the twentieth century has sparked an equally rapid growth in studies of ''World Christianity, '' which have dismantled the notion that Christianity is a Western religion. What, then, are we to make of the waves of Western missionaries who have, for centuries, been evangelizing in the global South? Were they merely, as many have argued, agents of imperialism out to impose