Answer: The murder of Archduke Franz Ferdinand outraged Austria-Hungary. ... Austria-Hungary was furious and, with Germany's support, declared war on Serbia on July 28. Within days, Germany declared war on Russia—Serbia's ally—and invaded France via Belgium, which then caused Britain to declare war on Germany.
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This is the answer of your question.
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A.
It's the only one that makes sense
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Answer:
Bien, entonces, ¿cuál es la pregunta?
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