Definition:  Acquisition by a government of other governments or territories, or of economic or cultural power over other nations or territories, often by force. Colonialism is a form of imperialism.

Sentence: advocacy of imperialism or sovereign interests over the interests of the dependent states.

Definition In Own Words: a policy of extending a country's power and influence through diplomacy or military force. And through cultural power.

2 Synonyms:

Opposite: The term of imperialism is an important term that was & is sometimes used to describe a nations aggressive foreign policy. Its practice shaped the future of the Imperialism.