Answer: Roosevelt Corollary
Step-by-step explanation:
The Monroe Doctrine of 1823 forbade European powers from colonizing any more territory in the Americas or attempting to increase their influence there. Theodore Roosevelt saw this as too passive especially when Venezuela was in danger of being invaded by European powers for the debt it owed.
In response, President Roosevelt, seeking to forestall this, added the Roosevelt Corollary to the Monroe Doctrine and stated that the U.S. would step in to fulfil the credit obligations of other countries in the Americas if the security of the Americas is threatened. The U.S. would in effect, act like an international policeman whose job was to defend the Western hemisphere.