Concept:Imperialism was mainly driven by the economic need to secure cheap raw materials for industries in Western powers.
Explanation:Western powers sought to control weaker regions, especially in Africa and Asia, to guarantee a steady supply of raw materials for their factories.
These resources included minerals, agricultural products, and other primary goods.
This economic control gave imperial powers a strong advantage in global trade and industrial production.
Although colonisation and territorial expansion occurred, they were tools used to achieve the primary economic goal.
Therefore, the key motive was obtaining and controlling sources of raw materials.
Answer:D. being to obtain and control a supply of raw materials for industries