Franklin Pierce – 147.4
The 14th President of the United States was a contentious character in the field of international politics, and he was nothing short of that. For him, the abolitionist movement posed “a fundamental challenge to the national unity,” as he put it himself. It is logical that this Democratic president would sign the Kansas-Nebraska Act of 1890, given the circumstances of the time. Franklin Pierce has an IQ of 147.4, which is only one point more than the average president in terms of intellectual ability. It was within the provisions of this act that each state was practically granted the authority to determine its own attitude regarding slavery.

Franklin Pierce