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.

Explanation:

americans had many intangible advantages. well since the british fought a war far from home military orders, troops, and supplies sometimes took months to reach their destinations, and the british had an extremely difficult objective. they had to persuade the americans to give up their claims of independence, americans had a grand cause: fighting for their rights, their independence and their liberty. this cause is much more just than waging a war to deny independence.

operation overlord was the codename for the battle of normandy, the allied operation that launched the successful invasion of german-occupied western europe during world war ii. the operation was launched on 6 june 1944 with the normandy landings