Can people give me some information on u-boats and its effects and why it failed

To transport troops, destroy others naval superiority, and to trade, they were able to destroy the enemies vital supplies and they were able to be sunk easily.

okay but whats the question.

explanation:

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.