What were the consequences when pseudo scientific ideas of race became intergral to government policies and legislation in the 19 and 20 centuries?​

These ideas about race were pided into two main theories, scientific racism and social Darwinism. Scientific racism developed when Social Scientists, who studied human behaviour in different social contexts, believed that the same system used by Natural Scientists to classify animals and plants according particular characteristics could be used to classify and categorise human beings as well.

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