1904 Roosevelt Corollary to the Monroe Doctrine.

The Roosevelt Corollary was a substantial amendment to the monore doctorine by the U.S president Theodore Rossevelt in 1904.

https://history.state.gov/milestones/1899-1913/roosevelt-and-monroe-doctrine

In the early 1900's Roosevelt grew concerned that a crisis between venezuela and its creditors could spark an invasion of that nation by European powers.This act stated that the U.S. would intervene as a last resort to ensure to other nations in the Western Hemisphere fulfilled their obligations to international creditors and did not violate the right of the U.S

Events Prior to 1904