Sources used
http://www.biography.com/people/james-monroe-9412098
http://www.history.com/topics/monroe-doctrine
http://www.u-s-history.com/pages/h255.html
http://www.biography.com/people/theodore-roosevelt-9463424#synopsis
http://www.u-s-history.com/pages/h1449.html
https://history.state.gov/milestones/1899-1913/roosevelt-and-monroe-doctrine
https://historyengine.richmond.edu/episodes/view/5487
http://www.american-historama.org/1881-1913-maturation-era/roosevelt-corollary.htm