What happens to the price of oil when opec countries decide to limit production?
a) oil prices drop
b) oil prices raise
c) oil prices collapse
d) oil stops being sold

When OPEC countries decide to limit production what happens is option B) oil prices raise. The Organization of Petroleum-Exporting Countries (OPEC), has a great influence on the production and price of oil. If the countries are unsatisfied with the oil price, they decide to limit production and wait for the price to raise.

a.   it resulted in widespread unemployment.

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.