Simplify the following text for a Grade 12 native English-speaking person.
Original: Classical or Greco-Roman mythology usually means the mythology , and the related polytheistic rituals and practices , of Classical Antiquity .
Simplified: Classical mythology or Greco-Roman mythology is the cultural reception of myths from the ancient Greeks and Romans . Along with philosophy and political thought , it represents one of the major survivals of classical antiquity throughout later Western culture .