empire
🇺🇸
/ˈempaɪər/
🇬🇧
/ˈempaɪə(r)/
A large group of countries ruled by one leader or government
The Roman Empire was one of the largest empires in history, controlling many lands.
A large business or group of companies controlled by one person or company
He built a successful business empire that includes many different companies.
An area or activity controlled by one person or group
Each manager protected their own small empire within the company.