Why did europeans use one-crop economies in their colonies?

In the time of the colonial era, European countries followed mercantilism.  This helped the production of agricultural products which could be exported to their motherland as raw materials for industries production there.  It also increased the importance of the capital market in the life of the colonial peoples.  As a result, larger numbers of land was shifted from growing food crops to growing “cash crops,”.

world war i began in 1914, after the assassination of archduke franz ferdinand, and lasted until 1918. during the conflict, germany, austria-hungary, bulgaria and the ottoman empire (the central powers) fought against great britain, france, russia, italy, romania, japan and the united states (the allied powers). to new military technologies and the horrors of trench warfare, world war i saw unprecedented levels of carnage and destruction. by the time the war was over and the allied powers claimed victory, more than 16 million people—soldiers and civilians alike—were dead.

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