Lyndon Baines Johnson, often referred to by his initials LBJ, was the 36th President of the United States from 1963 to 1969. He became President after the assassination of John F. Kennedy, under whom he had served as the 37th Vice President from 1961 to 1963. Johnson was a Democrat from Texas and also served as a U.S. Representative and U.S. Senator. He is one of only three people, along with Richard Nixon and Andrew Johnson, to have served in all four federally elected positions of the U.S. government. During his presidency, Johnson is known for his efforts to pass civil rights legislation, including the Civil Rights Act of 1964 and the Voting Rights Act of 1965. He also implemented a series of social welfare programs known as the “Great Society”. However, his presidency was also marked by the Vietnam War, which he escalated with the deployment of more troops.