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Nations conflict with other nations, and the citizens of those nations generally want their own nation to prevail, and so they offer their support, even to the extent of joining an army and going to war. In the case of WW I, there was very unrealistic optimism on both sides of the conflict, each side believed that they were so large and powerful that they could easily defeat any enemy. It was a stupid and destructive war, which changed the world forever.

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13y ago

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