One contribution of ancient roman culture
was the development of -
a the process for making silk.
b the printing press.
c the concept of zero.
(d a republican form of government.

D

Explanation:

The process of making silk was originated in China, the printing press was done elsewhere, and the concept of zero was done by other cultures.

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.

b or c im pretty sure