Benjamin Harrison – 145.4
During the Civil War, Benjamin Harrison served in the Union Army and became the 23rd President of the United States. During his presidency, he was regarded as one of the best presidents in US history due to his excellent international ties and close working relationship with Congress. The enforcement of African-American voting rights, as well as the admission of Montana, North Dakota, South Dakota, Washington, and Wyoming to the Union, were among his administration’s most notable accomplishments. With an IQ of 145.4, Benjamin Harrison was a genius.