A more thorough explanation:

LEX BARBARA

Lex barbara is a Latin term used in Roman law to refer to the laws of barbarian nations. These were nations that were not under the control of the Roman Empire.

One example of lex barbara is the laws of the Germanic tribes that lived in what is now modern-day Germany. These laws were not influenced by Roman law and were instead based on the customs and traditions of the Germanic people.

Another example is the laws of the Celts, who lived in what is now modern-day France and the British Isles. These laws were also not influenced by Roman law and were instead based on the customs and traditions of the Celtic people.

The examples illustrate the definition of lex barbara by showing that it refers to the laws of nations that were not under the control of the Roman Empire. These laws were often based on the customs and traditions of the people who lived in these nations, rather than being influenced by Roman law.