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In page Sati (practice):

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From 1815 to 1818 sati deaths doubled. Ram Mohan Roy launched an attack on sati that "aroused such anger that for awhile his life was in danger".[5] In 1821 he published a tract opposing Sati, and in 1823 the Serampore missionaries led by Carey published a book containing their earlier essays, of which the first three chapters opposed Sati. Another Christian missionary published a tract against Sati in 1927.[citation needed]