The list of the smartest presidents.

U.S. Presidents Ranked By IQ Score

Abraham Lincoln – IQ 140

Abraham Lincoln is known as the president who helped free the slaves. His mind was not formally trained in an Ivy League school like most leaders. In fact, he never attended college but maintained a lifelong desire to learn. He continually used his mind to solve problems and even patented a steamboat invention at a very young age.



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