The Gibbons v. Ogden court case in a nutshell:
Ogden had a monopoly on operating steamboats on the Lower Mississippi.
Gibbons, who had a federal liscence to operate steamboats, tried to start business there and was sued by Ogden.
The ruling was that Gibbons would be allowed to operate there, which gave precedent to federal law over state law.
C. chop sticks, China uses its lumber to millions of chop sticks.
Answer:
B. Hold free elections there as soon as possible.
Explanation:
In Yalta, Churchill was the one who pressed for free elections and democratic governments in Eastern and Central Europe (specifically Poland).