But when a long train of abuses and usurpations. . evinces a design to reduce [the people] under absolute despotism, it is their right, it is their duty, to throw off such government, and to provide new guards for their future security. whose actions do the phrases “abuses and usurpations” and “absolute despotism” refer to here?

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.