What role did imperialism play in causing the first world war?

Imperialism was a cause because building an empire needs manpower such as an army and a navy to conquer and keep the land that they colonised. The alliances system meant that a local conflict could easily result into an intimidating global one.

Explanation:

Imperialism was responsible for reforming the European alliances. Imperialist expansion played a major role in the growing tensions between Germany and Great Britain after the turn of the century. The growing imperialist rivalry was responsible for the slow formation of an anti-German alliance system in Europe.

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