How did the use of machine guns change the nature of warfare during world war i? a. it drew the united states into the conflict. b. it gave a tactical advantage to defensive forces. c. it gave germany an advantage over its enemies. d. it increased the effectiveness of offensive attacks.

both are true, the congress does have the power to create banks, even if this power is not specifically described in the constitution, since there is nothing restricting it and there is power given to the congress to make "all laws which shall be necessary and proper". maryland was not allowed to tax a branch of the national bank operating there, and the supreme court decided that no state could. both of these topics were discussed in a decision of the mcculloch v. maryland case in 1819.