Empires Debate!

Well, it depends on what aspects you're looking for.

For example, Greeks did a great job with art, philosophy, literature, etc. Greeks are more focused on artwork, while Romans were more focused on war and military services. Rome had one of the best governments in history. Anyways, in my opinion, Rome was the mightiest as in Medieval times, power was most influential.

Both had great Culture and I believe to be on par with one another. The Persian empire had a great Cultural affect as well along with a military as they wiped the Greeks out. Their Government as well was very great for about 40-50 years.