Which of the following statements is correct? a. movie studios in the 1930s were very similar to the ones of the 1920s. b. the radio was a source of information in both the 1920s and the 1930s. c. country and western music was popular during both the 1920s and the 1930s. d. fitzgerald wrote about the american dream in the grapes of wrath.

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?