What is the contribution of ancient civilization to world culture?

Antiquity has several options for periodization, for example, it can be considered from the middle of the VIII century BC to the end of the V century AD or even the beginning of the VI century, if the neoplatonist Boethius was related to ancient philosophy.

The contribution was as follows:

The Olympic Games appeared.
Development of sculpture and architecture. In ancient times, they learned to build stadiums, temples (Doric, Corinthian and Ionic orders), roads, aqueducts, public latrines and baths. The ruins are still being explored.
Politics: oratory, democracy and the republic, this did not exist in the period of the Ancient East.
Military affairs: phalanx and legions.
Philosophy and Sciences: Plato, Pythagoras, Seneca, Cicero, Aristotle.