Who was allowed to participate in athenian democracy? a) wives of citizens b) foreign-born residents c) men whose fathers had been citizens d) slaves who had been freed why did the persian emperor darius invade greece? a) spartan forces under king leonidas has attacked several persian cities. b) he wanted to avenge the defeat of his father, xerxes. c) athenians had ionian cities when they revolted against the persians. d) he wanted to stop the fighting between sparta and athens

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?