What role did nationalism play in causing WWI?

The most direct way nationalism caused World War I was through the assassination of Archduke Franz Ferdinand, who was the heir to the throne of the Austro-Hungarian Empire. This led, on July 23, 1914, to a series of unconditional demands sent to Serbia by the Austro-Hungarian empire in the form of an ultimatum.

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john locke is most associated with the idea of consent of the governed which is the idea that the government is only valid if it has the consent of the people who are being governed.

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