/ˌfɛdəˈreɪʃən/ – noun
Definition: 1. liên bang;
2. hội liên hiệp, liên đoàn.
A more thorough explanation: A federation is a political entity characterized by a union of partially self-governing states or regions under a central federal government, with powers divided between the central government and the constituent units.
Example: The Federation of Labor Unions filed a lawsuit against the company for unfair labor practices.