Concept:Imperialism refers to the economic control and exploitation of foreign lands in order to support the growth of capital.
Explanation:The phrase describes how powerful countries extend their influence over weaker territories.
They do this to obtain raw materials, cheap labour, and new markets.
These measures help remove barriers to the accumulation of capital at home.
This outward expansion and dominance matches the definition of imperialism.
Capitalism is the economic system itself, not the act of controlling foreign lands.
Socialism and industrialization do not describe this kind of foreign exploitation.
Answer:Imperialism (Option A).