imperialism imperialism /ˌɪmˈpɪriːəˌlɪzəm/

noun

1. () A policy of extending your rule over foreign countries  ( imperialism )
   a policy of extending your rule over foreign countries
   
2. Any instance of aggressive extension of authority  ( imperialism )
   any instance of aggressive extension of authority
   
3. A political orientation that advocates imperial interests  ( imperialism )
   a political orientation that advocates imperial interests
    Many nations suffered under the yoke of imperialism during the 19th century.
   Many nations suffered under the yoke of imperialism during the 19th century.