Loss of Citizenship
A person might lose his citizenship:
- By emigrating to a Latin colony. But in Justinian's time Latin colonists and all other free members of the Roman Empire were Roman citizens, and hence this rule was then obsolete.
- By expatriation, as by being shut out from the use of fire and water {interdictio aqua et ignis).
- By deportation to an island. This mode of punishment was introduced by Augustus to avoid the danger of allowing a crowd of banished men to meet wherever they pleased. It was banishment for life. Simple banishment did not, in Justinian's time, involve loss of citizenship.
- By desertion to the enemy.