3 major Eurpoean powers declare war (aug 1, 1914 – aug 4, 1914)

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Here is a brief overview of the international relations that caused the three major European powers:

- Austria-Hungary declared war on Serbia
- Germany declared war on Serbia because they had an alliance with Austria-Hungary
- Russia declared war on Germany and Austria-Hungary because they had a alliance with Serbia
- France declared war on Germany and Austria-Hungary because they had a alliance with Russia
- England declared war on Germany and Austria-Hungary because they had a alliance with France

https://youtu.be/dHSQAEam2yc

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