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How did colonial rule change trade between Asian countries and European powers?

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A map of the continent of Asia, including its countries, boundaries, and capital cities, as well as parts of Europe, Africa, and surrounding oceans. — Asia Map showing the countries and national capitals of Asia.

Colonial rule fundamentally restructured trade between Asian countries and European powers by shifting from a system of commercial exchange to one of extraction and dependency, often enforced through Western colonialism.21

As European East India companies established colonial control, they implemented a pattern where Asian territories were relegated to exporting raw materials—such as cotton, jute, tea, and tobacco—while importing finished goods from their colonial rulers. This policy intentionally stifled local manufacturing; for example, Britain imported raw cotton from India to process in industrial mills, then exported the finished cloth back to India, which devastated the livelihoods of indigenous weavers.21

Trade was further manipulated through:
* Monopolies: Colonial powers restricted colonies to trading exclusively with the mother country, often using their own shipping fleets.1
* Treaty Ports: Through military pressure, powers like Britain and France forced the opening of treaty ports in countries like China and Japan, where Westerners operated under extraterritoriality, exempt from local laws.3
* Coercion: Trade was sometimes forced, such as the British legalization of opium exports to China to offset trade imbalances.2

This system was designed to benefit European economies at the expense of Asian development, leaving a lasting legacy of economic disparity.21