What is imperialism?

Imperialism refers to a policy or practice in which a nation extends its control and influence over other countries or territories. This extension of power can occur through various means, including military conquest, colonization, or political and economic dominance. The essence of imperialism lies in the ability of a powerful nation to establish and maintain authority over weaker regions, often with the intent of exploiting resources, expanding markets, or spreading cultural values.

Although some of the other choices touch on aspects related to imperialism, they do not capture its comprehensive definition. While military expansion may be a component of imperialism, it is not its sole focus. International diplomacy may play a role in the processes involved in imperialism, but it does not define the overarching concept. Economic isolation stands in contrast to imperialist practices, which typically involve integration and control rather than withdrawal from international engagement. Thus, the correct understanding of imperialism encompasses the broader idea of extending power over other nations, making the selected choice the most accurate representation of the concept.