1683
Battle of Vienna
A relief army of Germans, Austrians, and Polish hussars under King Jan III Sobieski swept down from the Kahlenberg hills and shattered the Ottoman siege in a single afternoon. Kara Mustafa was strangled for the failure. The Ottoman advance into Europe was finished; the slow imperial retreat had begun, and the long liberation of Hungary and the Balkans could commence.
Qing Conquers Taiwan
A Qing naval force under the defected Ming admiral Shi Lang defeated the Zheng family fleet off Penghu and landed on Taiwan. The last Ming loyalist kingdom surrendered. The Kangxi Emperor, who had personally pushed the campaign, had finally secured the entire territory of traditional China under Qing rule, ending four decades of resistance on the island.
Pennsylvania Treaty at Shackamaxon
William Penn met with Lenape leaders beneath an elm tree at Shackamaxon on the Delaware and concluded a treaty of friendship that Voltaire would later call the only treaty never sworn to and never broken. Whatever its exact terms, it set a tone of relatively peaceful coexistence for the colony's first decades.
Siege of Vienna Begins
An Ottoman army of one hundred and fifty thousand under Grand Vizier Kara Mustafa invested the Habsburg capital. Emperor Leopold I fled; the garrison under Ernst Rudiger von Starhemberg dug in. For two months, the fate of central Europe hung on whether relief would reach Vienna before the mines under its walls collapsed the fortifications.