A more thorough explanation:

Imperialism is when a country or group extends its power and control over other areas through territorial acquisition or by exerting political and economic influence. This often involves the use of military force and aims for domination.

Historically, imperialism was associated with the expansion of European empires through colonial conquests, such as the acquisition of African lands or the distribution of Ottoman Empire territories after World War I. These conquests were motivated by a desire to exploit resources and appear stronger on the international stage, rather than a genuine desire to spread values or civilization.

Today, imperialism can also refer to economic, technological, or cultural domination. For example, some argue that the dominance of Western technology companies in developing countries constitutes a form of imperialism.

One example of imperialism is the policy of Alexander the Great, who expanded the Greek empire through military conquests. Another example is the Marxist concept of imperialism, which refers to the division of the world between great powers and the economic and political dependence of other states or populations.

Overall, imperialism involves the extension of power and control over other areas, often through force or economic influence, and is often motivated by a desire for domination and exploitation.