The doctrine, essentially stated by President Monroe in a message to Congress (Dec., 1823), that the U.S. would regard as an unfriendly act any attempt by a European nation to interfere in the affairs of the American countries or increase its possessions on the American continents.
Webster's New World
Monroe-doctrine Sentence Examples
The Monroe Doctrine is indeed the recognition, rather than the cause, of undeniable fact.
The president, however, sheltered himself behind the Monroe doctrine and appealed to the government of the United States to intervene.
On the 17th of December 1895 President Cleveland sent to Congress a special message calling attention to Great Britain's action in regard to the disputed boundary line between British Guiana and Venezuela, and declaring the necessity of action by the United States to prevent an infringement of the Monroe Doctrine.
The American Civil War ended in the spring of 1865, and a strong popular feeling was at once manifested in favour of asserting the Monroe doctrine against Maximilian's government.
In the difficulty between England and the United States over the Venezuelan boundary (Dec. 1895) Mexico expressed strong adherence to the Monroe doctrine in the abstract, and suggested that its maintenance should not be left wholly to the United States, but should be undertaken by all American Powers.