adjective
Definition: Relating to a policy or practice where a country extends its power and influence over other countries or territories, often through colonization or military force.
Example: The imperialist policies of the 19th century led to significant changes in many regions around the world.
noun
Definition: A person who supports or promotes the policy of extending a country's power and influence through colonization, military force, or other means.
Example: The imperialist policies of the 19th century led to significant changes in many countries around the world.