Final answer:
Colonialism is the system that helped a nation gain wealth by exploiting rival nations.
Step-by-step explanation:
The system that helped a nation get rich by gaining wealth from rival nations was called colonialism. Colonial powers would establish colonies in other parts of the world and exploit the resources and labor of these colonies to amass wealth. For example, during the Age of Exploration, European nations like Spain, Portugal, England, and France colonized territories in the Americas, Africa, and Asia to extract valuable resources like gold, silver, and spices.
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