World War I was called the Great War. People thought that it would be the war to end all wars.
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The answer is racial ....
The strategy of the Civil War for the Confederacy (the South) was to outlast the political will of the United States (the North) to continue the fighting the war by demonstrating that the war would be long and costly.
They provided British factories with raw materials
Under the Treaty of Paris, Britain acquired present-day Quebec, Cape Breton Island, the Great Lakes basin, and the Japanese financial institution of the Mississippi River. France was allowed to regain possession of Guadeloupe, which Britain had briefly occupied at some point of the war.