empire
noun [ C ]
uk/ˈempaɪər/ usa large group of businesses that are controlled by a powerful company or person:
build/create/expand an empire Entrepreneur Rocco Forte built his empire from budget hotels and motorway services.
control/run an empire Besides running a fashion empire, he also functioned as director of no less than three banks.
an entertainment/media/publishing empire
a business/property empire
a gobal/international/worldwide empire