Which statement best explains how banks contributed to the growth of the economy in the years after the civil war? a. banks lent millions of dollars to corporations. b. banks gained control of major corporations. c. banks adopted policies that reduced competition. d. banks made huge profits in hard economic times.

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.