Franklin Pierce – 147.4
The United States’ 14th president was a controversial figure in the political world. He called the abolitionist movement “a fundamental threat to the unity of the nation”. With this knowledge, it’s understandable that this Democratic president signed the Kansas-Nebraska Act. With an IQ of 147.4, Franklin Pierce is barely one point higher than the average president. This measure effectively gave each state the authority to determine its own position on slavery.
Franklin Pierce
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