The Monroe Doctrine stated that further efforts by European nations to colonize land or interfere with states in North or South America would be viewed as acts of aggression requiring U.S. intervention. The Doctrine noted that the United States would neither interfere with existing European colonies nor meddle in the internal concerns of European countries. The intent of this act falls under the category of nationalism. President Monroe's intent with this act was to close off the United States to further colonization, which simply means that the United States was now its own country and own land. The Doctrine appears to be an attempt at a threat, however it is clear that the other countries did not fear the US and the Doctrine was almost laughed at. Nevertheless, this was a clear attempt at nationalism by President James Monroe.
