Answer:
Similarities: Both governments had democracy, both nations have constitutions written by notable figures (Aristotle wrote Greeces and James Madison is credited the title of "father of the US constitution") and at the creation of each constitution only white men could vote.
Differences: The US is more like Rome than Greece because Rome and the United States have a representative democracy while Greece has a direct democracy. Another difference was that military service was required amongst boys in Ancient Greece. Another big difference was that Greek citizens weren't entitled to a public defender in court.
Step-by-step explanation:
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