Why do you think most history focuses on the colonists and not on the American Indians and
Slaves who also contributed to the formation of our
new nation?

Well probably because the colonists came to make America and were thouht to be more important in history.

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.