What did Monroe doctrine do?

It solve the problem of piracy in the Caribbean
It provided military aid to Spain to fight the British
Opposed to European involvement in the Americas
It increased American trade with Latin American countries

The Monroe Doctrine opposed European involvement in the Americas. It declared that any attempts by European powers to establish new colonies or interfere with existing ones in the Americas would be viewed as acts of aggression against the United States. It also stated that the United States would not interfere in the internal affairs of European countries. While the Monroe Doctrine did not directly address the issues of piracy or military aid, it did have the effect of increasing American trade with Latin American countries as it helped to establish the United States as a dominant power in the region.