/ˈɛmpaɪə/ – noun
Definition: 1. đế chế;
2. quyền lực tối cao;
3. vương quốc, đế quốc.
A more thorough explanation: An empire is a group of countries or regions that are controlled by one ruler or government. It is a political unit in which a single sovereign authority, known as an emperor or empress, exercises supreme control over a large territory or group of territories.
Example: The company expanded its business operations and established an empire of retail stores across the country.