How did the westward expansion impact, black people?

Westward expansion in the United Stated impacted slaves in the sense that each new state had to decide whether it was going to be "slave" or "free"--meaning that if slaves were brought to a "free" state they could try to sue for their freedom.

Explanation:

i also think he is correct. i believe they came to washington to protest their rights.

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.