The Wars of Castro ended when Pope Innocent X and his forces destroyed the Italian city of Castro.
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The first battle between the Spanish settlers and the Mexican natives of the Otomi and Tlaxcalans tribespeople started.
Bing Crosby made his nationwide solo radio debut.
Google launched Google Chrome, its own cross-platform web browser.
Japan formally surrendered, officially bringing an end to the six years of World War II.
Great Britain and its colonies spent their last day using the Julian calendar.