February 20 in History

The Visconti family was fighting itself. Lodrisio Visconti, exiled from Milan, hired the Company of St. George — 2,500 German mercenaries who'd never lost a battle. He marched on his own family's city. His uncle Luchino and cousin Azzone commanded Milan's defense. The armies met at Parabiago, six miles outside the walls. The mercenaries were winning. Milan's lines broke. Then Luchino claimed he saw Saint Ambrose appear on horseback in the sky, rallying his troops. The Milanese regrouped and slaughtered the Germans. Lodrisio survived but never came home. Milan stayed Visconti for another century. Wars were decided by whoever controlled the narrative about what soldiers thought they saw.

René-Robert Cavelier meant to find the Mississippi. He missed by 400 miles. His expedition landed at Matagorda Bay in Texas, thinking they'd hit Louisiana. Instead of turning back, Cavelier built Fort St. Louis and claimed everything around it for France. The fort lasted three years before Karankawa warriors destroyed it. Everyone died or was captured. But the mistake worked. When Spain heard the French had built a fort in Texas, they panicked and rushed to establish missions throughout the region. France's failed colony triggered Spain's colonization of Texas. Cavelier's navigation error drew the map.

Washington signed the Postal Service Act in 1792, creating the first federal information network. It did something radical: newspapers could travel through the mail at heavily subsidized rates. This wasn't about letters. It was about making sure a farmer in Kentucky could read the same news as a merchant in Boston. The post office lost money on every newspaper it carried. That was the point. By 1800, the U.S. had more post offices than any country in Europe, most of them in towns under 500 people. Democracy required information to move faster than rumor.

The Uruguayan War ended with a handshake that started a bigger war. President Villalba and rebel Flores signed peace in February 1865. Brazil had backed Flores with 6,000 troops. Paraguay's president watched Brazilian soldiers operate freely in Uruguay and decided his country was next. He invaded Brazil's Mato Grosso nine weeks later. Argentina and Uruguay joined Brazil against him. The War of the Triple Alliance killed 60% of Paraguay's population. The peace treaty lasted two months.

The Supreme Court ruled you could be fined five dollars for refusing a smallpox vaccine. Henning Jacobson, a Swedish immigrant in Cambridge, said mandatory vaccination violated his liberty. The Court disagreed: individual freedom ends where community health begins. Massachusetts had lost 1,700 people to smallpox in recent outbreaks. The ruling became the legal foundation for every public health mandate since—mask orders, quarantines, school vaccine requirements. All traced back to a five-dollar fine in 1905.

King O'Malley drove in a survey peg on March 20, 1913, marking where Canberra would rise from sheep paddocks. He wasn't actually a king — he was an American-born insurance salesman who claimed to be Canadian to get around Australian laws banning American politicians. He picked the spot for Parliament House. The city he helped launch wouldn't get its first residents for another fourteen years. Australia's capital existed as stakes in dirt longer than some nations last.

Congress approved the San Francisco–Oakland Bay Bridge in 1931. The timing was deliberate: Depression-era jobs program disguised as infrastructure. California couldn't afford it. The federal government fronted $77 million. Construction started six months later. They built it in sections from both shores, meeting in the middle over Yerba Buena Island. The west span hung from suspension cables. The east span sat on cantilever trusses. Two completely different bridges, joined at an island, functioning as one. It opened in 1936, six months before the Golden Gate. More cars crossed it daily. Still do. But the Golden Gate got the postcards. The Bay Bridge got the commuters.

Anarchists took Encarnación for four days in 1931. They burned land deeds, opened the jail, and declared all property common. The police chief fled across the river to Argentina. Workers ran the docks. Students ran the schools. Nobody collected rent. Then the Paraguayan army showed up with artillery. Most of the revolutionaries escaped the same way the police chief had — by boat to Argentina, where they disappeared into exile. The land deeds were rewritten from memory. Four days was long enough to prove it could work. Not long enough to prove it could last.

Congress voted to end Prohibition on February 20, 1933. Thirteen years of federal alcohol bans, done in one afternoon. The Blaine Act sent the Twenty-first Amendment straight to state conventions, bypassing legislatures entirely. They knew state politicians wouldn't vote to legalize drinking — too many temperance voters back home. So they let regular citizens decide instead. Utah cast the deciding vote nine months later. Utah. The Mormon state ended Prohibition. By then, bootleggers had made more money than legal distilleries ever did, and organized crime had gone national. The only amendment ever repealed was the one that tried to legislate morality.

Twenty thousand people gave Nazi salutes in Madison Square Garden on February 20, 1939. The German American Bund filled the arena with swastika banners and a massive portrait of George Washington flanked by Nazi flags. They called it a "Pro-American Rally." Outside, 100,000 protesters tried to break through police lines. Inside, the speaker called for a "white, gentile-ruled United States." New York's mayor wouldn't ban it. First Amendment. The Bund dissolved two years later when America entered the war.