Yes because they are made of 2 or more substances
Monroe Doctrine was a document and policy aimed at preventing European involvement in the America's. The last option in the given question is the correct option. This was actually a United states Foreign policy during the year 1823. This policy covered all the Latin American countries. Any European interference would be regarded as an act of war against the United States of America. This policy was made to ward off any attempts by the Europeans to colonize any part of America. This Monroe doctrine was in force for almost a 100 years without any kind of massive change in it.
