What was the biggest difference between government in ancient athens and in ancient rome? rome was a direct democracy, and athens was not. athens allowed all citizens to vote, while rome was a republic. athens allowed women and slaves to vote, but rome did not. rome had a bicameral assembly, and athens did not.

The difference between both was citizens voting rights. The information you gave explained that Athens gave people the opportunity to vote freely no matter who they were while Ancient Rome had rules and regulations such as women and slaves could not vote for they were a democracy so Athens never had a government system there for l they never had a policy for voting unlike Rome