What is monroe doctrine
a. a trade agreement between the united states and mexico
b. a military treaty between spain and mexico
c. a pact between the united states and mexico to ward off european invaders
d. a document and policy aimed at preventing european involvement in the americas

D.

Explanation: Issued on 12/02/1823 by President Monroe

peace keepers

idealism to be spread

riches kept

congress also has implied powers, which derive from the necessary and proper clause of the constitution and permit congress "to make all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states.