John Green explains how Rome had great power and influence before it officially became an empire. He explains how Rome gained the characteristics of an empire by engaging in, and winning, the Punic Wars.
The Roman Senate debates whether or not to accept the Barbarians into Roman society. The senators in favor of the decision feel that accepting Barbarians will make their society grow even stronger. The senators against the decision believe that the Barbarians will still not be loyal to Roman society. Caesar's decision to accept the Barbarians into Rome is made with the expectation that they will be loyal to Rome.