Religion

The Romans had a "practical" attitude towards their gods, that Catone the Elder, thought there was a contractual relationship between man and his gods. The Latins used to say do ut des "give to have". They introduced in their Pantheon based on the "Capitoline Triad" (Jupiter, Juno and Minerva) the gods of the various civilizations they met: Greeks, Egyptians, Syrians and Persians.

They preferred the Greek cults and formed a Greek-roman religion.
But during the Empire, other exotic cults spread in Rome, such as the Egyptian cult of the Godess Isis, and that of the Indo-Iranian god of Sun Mithras called by the Romans Helios.
But another cult coming from East, Christianity, prevailed over all.