What did James Monroe do?

James Monroe was the Fifth President of the United States. He issued the Monroe Doctrine. (The Monroe Doctrine was when James Monroe warned Europe not to get involved in our problems and life.)

It warned European nations not to interfere in the Western Hemisphere . Monroe was the president when the doctrine was declared to the world.

No. They have absolutely no connection, as "Marilyn Monroe" is not her true name. It's a stage name. She was born Norma Jeane Mortenson, and baptised as Norma Jeane Baker.As a side note, "discendent"...

Well, President Monroe passed the Monroe Doctrine because he was afraid of too much European involvement in North America.

Yes he was.