Martin Van Buren was the eighth President of the United States, serving from 1837 to 1841. He was a member of the Democratic Party and is known for his support of the working class and his opposition to the Second Bank of the United States. Van Buren was born in Kinderhook, New York in 1782 and served as a lawyer and politician before becoming President. During his presidency, he faced several challenges, including the Panic of 1837 and the annexation of Texas. He is also known for his signature phrase, "OK," which was popularized during his campaigns. Despite his accomplishments, Van Buren's presidency was marked by controversy and he was not re-elected for a second term.