Why did imperialists seek possession for colonies that had extractive economies

Imperialists seeked possession of colonies that had extractive economies because they wanted to gain the advantage of the global resources.

Explanation: The imperialists sought the possession of colonies that had extractive economies precisely because of the growing market for raw materials, for the richness of their fertile soils, for the large amount of mineral resources such as gold, salt, coal, uranium, copper among others, as well. As for the richness of its seas. The characteristics presented by the extractive colonies allowed the imperialists to plunder at will, the mineral deposits much of the African Continent, who, owning all these natural wealth, was distributed among imperialist powers such as France, Germany, Great Britain and Portugal.