President Benjamin Harrison served as the 23rd President of the United States from 1889 to 1893. He was a member of the Republican Party and the grandson of William Henry Harrison, the 9th President. Harrison is known for his efforts to modernize the U.S. Navy and for signing the Sherman Antitrust Act, which aimed to combat monopolies and promote fair competition. During his presidency, Harrison also oversaw the admission of six new states into the Union, including North Dakota, South Dakota, Montana, and Washington. His administration faced challenges, including economic issues and debates over tariffs, which ultimately contributed to his defeat in the 1892 election.