What is the difference between the political systems in ancient Rome and ancient Greece

Rome used two systems, depending on the time period, they used the Republic, where people would represent different people, however, later on, they used the Imperial System.

Greece, you can't say it all as one. Athens used absolute democracy, where everyone was equal, as long as you were not a woman, child, or slave. Sparta used oligarchy, which is kind of like a mixture between a republic and a monarchy, in which a small group of people rule over the land. But most of the rest of Greece had monarchies, especially Crete.

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.