Napoleon sold the louisiana territory to the united states because he
a. would have a hard time managing the land and needed the money for war in europe.
b. was forced to sell the land after losing a war to the united states.
c. didn't see any value in the louisiana territory.
d. felt that the united states would be the best country to manage the land.

in mcculloch v. maryland (1819) the supreme court ruled that congress had implied powers under the necessary and proper clause of article i, section 8 of the constitution to create the second bank of the united states and that the state of maryland lacked the power to tax the bank.

gibbons v. ogden, (1824), was a landmark decision in which the supreme court of the united states held that the power to regulate interstate commerce, granted to congress by the commerce clause of the united states constitution, encompassed the power to regulate navigation.