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Manifest destiny was a widely held cultural belief in the 19th-century United States that American settlers were destined to expand across North America. Historian Frederick Merk says this concept was born out of "a sense of mission to redeem the Old World by high example... generated by the potentialities of a new earth for building a new heaven". However, in contemporary culture many have condemned manifest destiny as an ideology that was used to justify genocide against Native Americans.
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