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Stephane LaFleur · 07/19/2026

19 July 1870: War from a Telegram

19 July is a reminder of how quickly words can turn into weapons. On this day in 1870, the France of Napoleon III declared war on Prussia. What had previously seemed like a dispute among diplomats set hundreds of thousands of soldiers in motion within days and thrust Europe into a new era.The immediate cause lay in Spain. After the revolution of 1868, the Spanish throne was vacant, and the…

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