The immigration policy of the Roman Empire failed.

Reasons for the failure of Roman Empire s immigration policy;

1, after the expedition, many army generals began to support themselves and respect themselves, and no longer obeyed people.

2. After all ethnic groups in Italy became Roman citizens, it led to domestic chaos, people no longer loved their motherland as before, and their attachment to Rome no longer existed.

3. Rome accumulated a lot of wealth through plunder, which led to the corruption of the army and loose military discipline.

4. The members of the army are no longer mainly Romans, but other nationalities account for a larger proportion.

5. Change their ruling system, and the principles applied in this new government that contradict the previous principles have dragged down the greatness of Rome.