What did the golden ages of Athens, India and han China all have in common and their differences

Similarities:

The Golden ages of Athens, India and Han China all took places thousands of years ago and were concentrated only in a part of modern-day countries/counties they form.

E. g. Han China was only the Southern-Eastern of Modern China and the Gupta Empire was mostly concentrated on the North-East of Modern India.

Athens was a city-state which influenced the subsequent Greek culture and literature.

All these Empires were known for a love of Art, a strong military and very advanced economic systems to support their population.

All these Empires were largely agriculture based with formal and informal slavery.

Differences:

All these Empires developed in completely different regions of the world and did not share any linguistic, cultural of any other affiliation.

The Han Chinese were perhaps the only of these Empires which were able to significantly impact the rest of the world. For example, the Great Chinese inventions of Paper currency is still used today.