Modernizing The Monroe Doctrine is a book written by Charles Hitchcock Sherrill in 1916. The book discusses the relevance and modernization of the Monroe Doctrine, which was first introduced by President James Monroe in 1823. The Monroe Doctrine stated that any attempt by European powers to colonize or interfere in the affairs of the Americas would be seen as a hostile act by the United States.Sherrill argues that the Monroe Doctrine needs to be updated...