d) Roosevelt CorollaryRoosevelt Corollary put Europe and the rest of the world on notice the US would assume authority to intervene in affairs in the Western hemisphere. European nations moved swiftly to collect their debts from Santo Domingo (now Dominican Republic) after they had gone bankrupt. Roosevelt intervened taking control of Santo Domingo's banks, and defended his intervention by adding a new dimension, Roosevelt Corollary, to the Monroe Doctrine.