Answer:
Athens
- was a direct democracy
- had a Council of 500
- allowed all citizens to vote
Athens had a direct democracy which meant that citizens voted on all matters that concerned the city-state. This excluded women and slaves and people below the age of 20 however.
There was also a Council of 500 that had the responsibility of running the city and they were appointed by the citizens.
Rome
- was a republic
- had a bicameral assembly
- was led by a senate
Rome was originally a Kingdom but deposed its king and became a republic where there was a bicameral assembly comprised of the Senate and Tribunes. The Senate however, wielded most of the power as it comprised of nobility and so led the Roman Republic until Augustus founded the Roman empire.