William McKinley Jr. – 143.4
William McKinley Jr., the 25th President of the United States, served from 1897 to 1901 and had an IQ of 143.4. He was the last president of the United States during the Civil War, and he also helped the United States win the Spanish-American War. During his presidency, the United States saw significant changes, with Guam, the Philippines, and Puerto Rico all becoming territories. He was also well-liked for his attempts to strengthen the economy, albeit he did not do much to ensure that all Americans were treated equally.
William McKinley Jr.
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