This american poster from 1917 is suggesting that the united states a) should fight germany to protect the borders of the u. s. b) is far enough away from the conflict raging in europe. c) should stay out of european affairs. d) will be invaded by a simian army.

The quote below is an excerpt from the charter of the united nations: "the purposes of the united nations are: to maintain international peace and security, and to that end: to take effective collective measures for the prevention and removal of threats to the peace, and for the suppression of acts of aggression or other breaches of the peace, and to bring about by peaceful means, and in conformity with the principles of justice and international law, adjustment or settlement of international disputes or situations which might lead to a breach of the peace . " source:this section implies that the united nations is prepared to do what to keep world peace?