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In page Spiritualism (movement):

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Diversity of belief among organized spiritualists has led to a few schisms, the most notable occurring in the U.K. in 1957 between those who held the movement to be a religion sui generis (of its own with unique characteristics), and a minority who held it to be a denomination within Christianity. In the United States, this distinction can be seen between the less Christian organization, the National Spiritualist Association of Churches, and the more Christian spiritual church movement.[citation needed]