What does domestication mean? The origin of domestication.

1. Naturalization refers to a person's voluntary and active acquisition of the nationality of a country other than the nationality of birth.

2. The word "naturalization" first appeared in China's Hanshu. "Han Xiongnu Biography" has a cloud: "Xiongnu civil strife, five khans are fighting. Every day they call on Xie Han to naturalize their country and help them become vassals. "

3. In some countries, it is a condition that naturalized people give up other nationalities to avoid dual nationality. However, whether to retain the original nationality depends on the laws of both the country of original nationality and the country of naturalization.