John Tyler – 148
Following the death of William Henry Harrison, John Tyler became the 10th President of the United States. He was the first president to succeed a president who died in office. He was the first president who was not elected, and he served as the country’s leader from 1841 to 1845. Tyler delegated authority over slavery and a number of other concerns to the states. Because of his submissive attitude, he made a lot of enemies in Congress and was dubbed “His Accidency.” During his term, he was also the subject of the first attempted impeachment, which failed.