Why did the united states government place price controls on petroleum companies in the early 1970s?
a) oil companies needed more money in order to increase exploration.
b) oil executives had been criticized for spending money wastefully.
c) there was an international oil embargo that caused gas prices to rise.
d) people were refusing to buy gasoline because of its link to terrorist groups.

Which points did chief justice roger b. taney use to justify the supreme court’s ruling in the dred scott case? the property clause of the constitution, the due process clause of the fifth amendment, and the fact that african americans were not citizens. the practice of judicial review established in marbury v. madison, the property clause of the constitution, and the due process clause of the fifth amendment. the necessary and proper clause of the constitution, the due process clause of the fifth amendment, and the fact that african americans were not citizens. the commerce clause of the constitution, the elastic clause of the sixth amendment, and the practice of judicial review established in gibbons v. ogden.