Answer: By accepting the norms of civilization.
Step-by-step explanation:
When we talk about barbarians, throughout history, the word itself has been widespread. The Greeks used it for all other nations. Romans for all who could not even read written Latin. According to these old beliefs, the barbarian could be cultivated in several ways. In the right order, this meant accepting Christianity. During the Middle Ages, barbarians were all pagans or non-Christians. Barbarian could also cultivate if he learned to read and write and accepted Western European culture and civilization's general norms.