The policy developed by president monroe that warned europe to keep out of american affairs was the

The policy developed by President James Monroe that warned Europe to keep out of American affairs was the Monroe Doctrine.

The Monroe Doctrine by American President James Monroe was established in order to oppose the European colonialism in America which begins in 1823. European nations would want to take control over the independent states of North or South America will be interpreted as "the manifestation of an unfriendly disposition toward the United States."

the correct answer is d: "party organizers, volunteers, voters, and elected officials."

both include an amendment process.