Which term best describes a country formed on a shared culture, language, and history?

Imperialism

Militarism

Nationalism

Colonialism

Nationalism is the term that best describes a country formed on a shared culture, language, and history. A nation is a group of various peoples sharing their cultures, languages, and history, so obviously nationalism was based on that word. Imperialism refers to acquiring territories through war and power. Miltarism refers to having a strong army. Colonialism refers to taking control over another country.