s. The first such law was created in Indiana in 1907, followed by 27 other States in the next 30 years. These laws gave the permission to the individual States to forcefully sterilize all "confirmed criminals, idiots, rapists and imbeciles" By 1964, 63, 678 forced sterilizations had been performed under sterilization laws in 28 American States. In order for the purification of the American population to occur, it had to be determined who were the intelligent races and who were the "idiots". As a result, a group of psychologists introduced the idea of testing, using IQ tests, the intelligence of all army recruits during the First World War. Carl Brigham, a member of this group, then published his book, A Study of American Intelligence, showing that the Nordic Races were indeed more intelligent than the other races. He concluded that the average mental age of White individuals was 13 years and that of Black individuals was 10 years. It was then accepted by the American public that the Blacks were the unclean race and the whites were the honorable race. Galton's theories were therefore proven by these tests and were doubtlessly accepted by many psychologists, not only by the nave public. When Calvin Coolidge became President in 1924, he signed the Immigration Restriction Act, which limited, in percentage, the entrance of immigrants according to the American Census of 1890. He tried to, "Keep America American", as he stated when he was the vice-president. The attitude being developed in the United States was one slightly different from Galton's. It was concerned with the invasion of the country by inferior races rather than Galton's idea of the upper class being threatened by "pauperism".However, eugenics in Germany also took on a new look compared to Galton's theories. In fact, when the nazi party came into power in 1933, they exercised eugenic ideas to the point of causing the Second World War. The Nazis exercised their power long befor...
