October 16

Wu Zetian ascends the Tang dynasty throne and proclaims herself sole ruler of the Chinese Empire, its only female emperor.

Wu Zetian, who had wielded effective power as empress dowager and regent for years, formally deposed her own son and declared herself emperor, founding the short-lived Zhou dynasty and becoming the only woman in Chinese history to rule in her own right under the formal title of emperor rather than empress consort.

Jadwiga is crowned monarch of Poland despite her gender, ruling as "king" rather than queen.

Jadwiga, daughter of the King of Hungary and Poland, was crowned using the title "king" rather than queen to emphasize her sovereign authority in her own right, later marrying the Grand Duke of Lithuania in a union that began a centuries-long Polish-Lithuanian political partnership.

Queen Marie Antoinette is executed by guillotine during the French Revolution.

Following a hasty trial before a revolutionary tribunal, Marie Antoinette was executed by guillotine in Paris's Place de la Revolution, her death coming just months after that of her husband Louis XVI, and it remains one of the most enduringly infamous executions of the French Revolution's Reign of Terror.

Napoleon surrounds and forces the surrender of Austrian forces at Ulm during the War of the Third Coalition.

Napoleon's forces skillfully maneuvered to encircle a substantial Austrian army near the city of Ulm, forcing its surrender with minimal fighting and demonstrating Napoleon's exceptional strategic capability at coordinating rapid troop movements across difficult terrain during the War of the Third Coalition.

The four-day Battle of Leipzig begins as the Sixth Coalition attacks Napoleon's forces.

One of the largest battles in European history before the twentieth century began near Leipzig, Germany, as a coalition including Russia, Prussia, Austria, and Sweden confronted Napoleon's forces over four days of intense fighting, ultimately resulting in a decisive coalition victory that forced Napoleon's retreat back toward France.

Much of the ancient Palace of Westminster in London burns to the ground in a devastating fire.

A catastrophic fire, sparked accidentally while burning obsolete wooden tally sticks used in the treasury, destroyed most of the medieval Palace of Westminster, necessitating the construction of the current Gothic Revival parliamentary buildings recognized today as an iconic symbol of British democracy.

Abolitionist John Brown leads his raid on the federal arsenal at Harpers Ferry, Virginia.

Radical abolitionist John Brown led a small armed group in seizing the federal arsenal at Harpers Ferry, intending to spark a wider slave uprising, though the raid was quickly suppressed by federal troops and Brown was captured, tried, and executed, his actions significantly heightening sectional tensions ahead of the Civil War.

Walt Disney and his brother Roy establish the Disney Brothers Cartoon Studio.

Walt and Roy Disney formally established their animation studio in Los Angeles with a modest initial contract to produce a series of cartoon shorts, a modest beginning that grew over subsequent decades into one of the world's largest and most influential entertainment conglomerates.

Karol Wojtyla becomes Pope John Paul II, the first non-Italian pontiff in over four centuries.

Polish Cardinal Karol Wojtyla was elected pope, taking the name John Paul II and becoming the first non-Italian pontiff since the sixteenth century, going on to serve one of the longest papacies in history and playing a significant role in the eventual collapse of Communist rule in his native Poland and across Eastern Europe.

The Bibliotheca Alexandrina opens in Egypt, commemorating the ancient Library of Alexandria.

A modern library built near the site of the legendary ancient Library of Alexandria, once among history's greatest repositories of knowledge before its destruction in antiquity, opened in Egypt as both a functioning research institution and a symbolic tribute to the pursuit of learning across cultures.