Question

How did Roman religion change at the beginning of the Roman Empire?

Roman gods began to more closely resemble Greek gods.

Christianity became the official religion of Rome.

Many of the native religions were included into the Roman religion.

The native religions of Rome's conquered territories were made illegal.

Answer 1

@swami @surd @arabpride

Answer 2

@nincompoop @nikato

Answer 3

A
http://en.wikipedia.org/wiki/Religion_in_ancient_Rome
From the first little paragraph