co‧lo‧ni‧al‧is‧m /kəˈləʊniəlɪz
əm $ -ˈloʊ-/
noun [uncountable] when a powerful country rules a weaker one, and establishes its own trade and society there ⇒
colony,
imperialism:
a legacy of European colonialism [TahlilGaran] Dictionary of Contemporary English ▲