As a political philosopher, Jefferson favored the rights of states and a strictly limited federal government. This vision was contrary to that of John Marshall, who believed in the need for a strong and broad federal government, capable of resolving the conflicts of its people and guaranteeing the rights of its citizens.
The Monroe Doctrine and the Roosevelt Corollary made it possible for the United States to go to Latin America and try to make them a part of the United States. The Roosevelt Corollary made it possible for the Monroe Doctrine to be enforced.
