What term describes the dominance of a larger nation over a smaller nation’s affairs?

The term that best describes the dominance of a larger nation over a smaller nation's affairs is imperialism. This concept encompasses the political, economic, and military influence that a stronger nation exerts over weaker nations or territories. Imperialism often involves the direct or indirect control of a smaller nation’s policies, resources, and cultures, leading to significant transformation in the way life is organized in those regions. Historical examples include the expansion of European powers into various parts of Africa and Asia during the 19th and early 20th centuries.

Colonialism, while related, specifically refers to the practice of acquiring full or partial control over another country, often establishing settlements and exploiting resources. Nationalism pertains to the sense of pride and identity in one's own nation, generally promoting self-determination rather than dominance over others. Isolationism involves a policy of non-participation in international affairs and does not describe any dominance between nations.