Foreign imperialism refers to the policy or practice where a powerful nation extends its authority and influence over weaker nations or territories, often through economic, political, or military means. This practice often led to the exploitation of resources and people in the colonized regions, resulting in significant social, cultural, and political changes. In the context of early 20th century China, foreign imperialism played a crucial role in shaping the events that led to movements such as the May Fourth Movement, as it sparked nationalist sentiments and a desire for reform among the Chinese populace.