Austrian Ultimatum: The Spark That Ignites World War I
Austria-Hungary delivered an ultimatum demanding Serbia dismantle nationalist groups, allow Austrian officials to operate within Serbian borders, and surrender suspects in the Archduke's assassination. When Belgrade accepted most terms but rejected the violation of sovereignty required by point six, Austria-Hungary severed diplomatic ties and declared war four days later. This specific rejection triggered a chain reaction that pulled all major European powers into World War I.
July 23, 1914
112 years ago
Key Figures & Places
What Else Happened on July 23
Byzantine emperor Nikephoros I sacks Pliska, seizing Khan Krum's treasury in a brutal raid that temporarily crushes Bulgarian resistance. This victory, however,…
Knights Hospitaller galleys decimated an Aydinid fleet off the coast of Chios, shattering Turkish naval dominance in the Aegean. This decisive engagement secure…
Three hundred colonists set sail from Dieppe, France, bound for the rugged shores of New France. This expedition reinforced French territorial claims in North A…
Danish-Norwegian forces seized the strategic harbor town of Marstrand from Sweden, severing the Swedish navy’s primary connection to the North Sea. This capture…
Prussia's conquest of Mayence solidified its control over the region, altering the balance of power in Europe during the Radical Wars.
Prussian forces reclaimed Mainz from French radical troops, dismantling the short-lived Republic of Mainz. This victory restored the authority of the Elector of…
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