Original: Classical antiquity ( also the classical era or classical period ) is a broad term for a long period of cultural history centered on the Mediterranean Sea , comprising the interlocking civilizations of ancient Greece and ancient Rome , collectively known as the Greco-Roman world .
Simplified: Classical antiquity ( also the classical era or classical period ) is a broad term for a long period of cultural history at the Mediterranean . It includes the civilizations of Ancient Greece and Ancient Rome , known as the Greco-Roman world .