Imperialism refers to the act of expanding a country's power and influence by obtaining control over other territories through military force, political dominance, or economic manipulation. Imperialism has been a common strategy used by powerful nations throughout history to increase their wealth, resources, and political power. It often involves the colonization or annexation of foreign territories and the exploitation of their resources and populations. Imperialism has had significant impacts on global politics, economics, and culture, shaping the modern world as we know it.