Through most of its history, the US had heeded president George Washington's advice in his Farewell Address that the country remain neutral and avoid foreign entanglements. This strategy had worked successfully, allowing the US to quietly emerge as a powerful nation by the end of the 19th century.
"B. the decline of monarchies" was not a remote cause of the outbreak of World War I, since many of the European countries that entered the war still had kings and queens.
Problems associated with the "urban machine" were that they were undemocratic and were corrupt. They moved the political system to allow candidates to win based upon vote-buying, coercion, and other corrupt methods. They were therefore effective or ineffective depending on the relationship you had with the machine and also whether or not you wanted to see a democratic system or not.
Answer: The UN Security Council passed Resolution 84, sponsored by the United States, to respond to the North Korean invasion of the South.
Explanation: