How did the Khmer Rouge coming to power lead to genocide

What is the supreme law of the land? the declaration of independence the federalist papers the articles of confederation the constitution

Ive been stuck on this question! which of the following statements about the economic consequences of the civil war is not accurate. a. inflation caused prices to rise by 80% in the north. b. because southern farms could not produce enough food for everyone in the south, the union navy allowed food shipments from britain. c. to pay for all of the food, supplies and armaments that were necessary for the union army, congress instituted an income tax. d. business bloomed in the north as factories and farms always had a market for the products.

Need asap plz ! looking at the map what effect might have geography played in americans having a political revolution against their king in great britain?