Which of the following statements best describes french settlers' treatment of native americans?
a. french settlers ignored the local native population unless they interfered with the fur trade.
b. french settlers enslaved native americans and force them to work in mines and on farms.
c. french settlers were on friendly terms with native americans and they relied on them to provide furs.
d. french settlers had a policy of killing most native americans in order to claim new lands.

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.

the causes of the dust bowls were severe droughts,   lands became dry and hard, temperature was higher than usual, hot and dry conditions killed crops, high winds. because of those factors, the winds kicked up dry soil and created clouds of dust.