The U.S. stabilized the nicaraguan government by occupying that country, setting up a conservative government, and arranging an election.
Congress brought American companies doing business in Mexico under control. The oil companies wanted the military intervention to protect their interests.
The trend was now peaceful negotiation instead of military conflicts.What was the United States policy toward Latin America change in 1920s?Bananas.
http://discovolonte.typepad.com/discovol
is the official website for the writer of the book %26quot;Bananas: The Fate of the Fruit that Changed the World.%26quot;
http://www.mayaparadise.com/ufc1e.htm
describes in better detail the history of the banana and US policy towards Latin America better than I ever could.
check it out. It's definitely an eye-opener.