According to the map, the greatest impediment to people traveling from illinois to california in the early 1800s was a) the danger of indian attack. b) a likelihood of bad weather. c) the rocky mountains and sierra nevada range. d) the failure to cross the ohio and tennessee rivers.

c it says nothing about connecting those 2 seas.

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.