Mark Twain [pseudonym of Samuel Langhorne Clemens] (1835-1910), quintessential American humorist, lecturer, essayist, and author wrote The Adventures of Tom Sawyer. University Of London Open Day Richmond, the American International University in London offers programmes in Undergraduate and Postgraduate degrees accredited in the UK & USA. Study subjects. as she went through a day of her 10-week summer analyst internship. She’s one of hundreds of interns working at the investment…