In his December 2, 1823, The statement, known as the Monroe Doctrine, was little noted by the Great Powers of Europe, but eventually became a longstanding tenet of U.S. foreign policy.

The Monroe Doctrine was expressed during President Monroe's seventh annual message to Congress, December 2, 1823:

The Monroe Doctrine was declared in a few paragraphs of President James Monroe's seventh annual message to Congress on December 2, 1823. ... Monroe Doctrine, 1823, Department of State

(President Monroe's seventh annual message to Congress put "European Powers" on notice that American continents were off limits to European colonization, and that any attempts to intefere...

from President James Monroe's seventh annual message to Congress, December 2, 1823: ... At the proposal of the Russian Imperial Government, made through the minister of the Emperor residing here,

USA-project, documents-area, Monroedoctrine, 1823 ... The Monroe Doctrine (1823) ... The Monroe Doctrine was expressed during President Monroe's seventh annual message to Congress, December 2, 1823:

The Meaning Of The Monroe Doctrine (1817-1823); BY ADMIRAL A. T. MAHAN ; ... The formulation of the Monroe Doctrine, as distinguished from its origin, resulted, as is universally understood,

The Monroe Doctrine was a United States policy that was introduced on December 2, 1823, which said that further efforts by European governments to colonize land or interfere with states in the Americas would be viewed by the United States of America as acts of aggression requiring...

President James Monroe’s 1823 annual message to Congress contained the Monroe Doctrine, which warned European powers not to interfere in the affairs of the Western Hemisphere.