Question

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.

Answer 1

"Athens allowed all citizens to vote, while Rome was a republic."

Explanation: Athens practiced direct democracy—male citizens voted directly on laws and policy in the Assembly. Rome (in the Republic) was a representative system with elected magistrates and a powerful Senate, so decisions were made through representatives and institutions rather than by direct mass vote.