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In page Harriet Martineau:

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Martineau's reflections on Society in America, published in 1837, are prime examples of her sociological methods. Her ideas in this field were set out in her 1838 book How to Observe Morals and Manners. She believed that some very general social laws influence the life of any society, including the principle of progress, the emergence of science as the most advanced product of human intellectual endeavour, and the significance of population dynamics and the natural physical environment.[citation needed]