How did the imperialistic thought come into existence?

The emergence of imperialism dates back to ancient China and Western Asia. It all started when humans began to organize themselves into complex societies. The practice then extended to the Middle East and Mediterranean nations during the 6th-4th centuries BCE. The label imperialism refers to policy customarily implemented by a country or powerful central government, featuring the extensive use of force, often through military means.

Imperialism is a policy that involves a nation extending its power by the acquisition of lands by purchase, diplomacy, or military force. Imperialism was a primary element to the conquests of Genghis Khan during the Mongol Empire, and of other warlords.