Complex sentence: Changes to what is regarded as entertainment can occur in response to cultural or historical shifts, hunting wild animals, for example, was introduced into the Roman Empire from Carthage.This became a popular public entertainment and spectacle, supporting an international trade in wild animals.
Split into simpler sentences: Changes to what is regarded as entertainment can occur in response to cultural or historical shifts. Hunting wild animals, for example, was introduced into the Roman Empire from Carthage and became a popular public entertainment and spectacle, supporting an international trade in wild animals.