Texas had more prisoner of war (POW) camps than any other state. How many prisoners were held in the camps? What type of work did they do?

How did the american revolutionary war change how some americans viewed the enslavement of african americans?

How did testimony such as this from the triangle shirtwaist factory disaster affect the workplace?

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?