What contribution did the ancient Romans make to world culture?

The contribution of the Romans to world culture was as follows:
Latin. This language is still used in medicine (terminology) and is studied by philologists, archaeologists, historians, and religious scholars.
Concrete and cement. The Romans invented it, and after the fall of the empire, these materials were forgotten until the middle of the 18th century.
Construction. The Romans built the best roads, stadiums, baths, latrines, arches and palaces of antiquity, not only in Rome, but throughout the Mediterranean.
The Legion and the military organization in general. The term is still in use today, foreign legion, for example.
Oratory, Cicero.
Literature, history, geography (figures: Seneca, Suetonius, Tacitus, Pausanias)

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