Answer:
The system of extraction was a system in which the colonizer, or the ruling country, extracted resources from the colony. This, often, over decades of imperial rule, resulted in the colony being stripped of its resources. When they were decolonized, the loss of these precious resources often led to economic depression and unrest. Many examples of this can be seen in Africa, where European rulers ran the colonies as their own property, plundering the natural wealth such as diamonds, ivory, timber and bauxite.
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