Question

How can the foreign policy agenda of the U.S. be defined after the Monroe Doctrine speech? Nationalistic Imperialistic Neutral Isolated

Answer 1

You can consider it to be Isolated. The doctrine was about preventing anyone from Europe from participating in political activities in the new land, and it was proclaimed that any European force that tried to control or colonize countries in the new land would be considered to be unfriendly to the US and the US would help the countries under attack.