May 30 in History

English commanders rigged a tribunal to destroy the teenage girl who had reversed the course of their war. Joan of Arc's condemnation trial began in Rouen in January 1431, conducted by Bishop Pierre Cauchon, a Burgundian ally of the English crown who violated ecclesiastical law at every turn to ensure a guilty verdict. Joan was burned at the stake on May 30, 1431. She was 19 years old. The trial was political from its first session. Joan had been captured at Compiegne in May 1430 and sold to the English by the Burgundians for 10,000 livres. English commanders needed Joan condemned as a heretic to delegitimize Charles VII's coronation, which Joan had made possible. Cauchon assembled a panel of pro-English clerics at Rouen Castle and began interrogations in February 1431. Joan was denied legal counsel, a direct violation of Inquisitorial procedure. She was held in a military prison guarded by English soldiers rather than a church prison with female attendants, as the law required. The interrogators, many of them university theologians, pressed her on her visions, her male clothing, and whether she believed she was in God's grace. Joan's answers were often remarkably shrewd: "If I am not, may God put me there; if I am, may God keep me there." The charges centered on heresy and the wearing of men's clothing, which the tribunal treated as evidence of diabolical influence. Joan briefly recanted under threat of immediate execution, then retracted her recantation days later when she resumed wearing men's clothing in her cell. Whether she chose to or was forced to by guards who removed her women's garments is disputed. The burning took place in the Old Market Square of Rouen on May 30. The executioner reportedly had difficulty arranging the pyre to ensure Joan could be seen by the crowd, as ordered. She called out to Jesus repeatedly and asked for a crucifix to be held before her eyes. English soldiers wept. Twenty-five years later, a papal court overturned the conviction and declared Joan innocent. Cauchon's procedural violations were so egregious that the retrial documented them at length. Joan was canonized as a saint in 1920.

Napoleon's first exile began with a treaty that dismantled his empire and left him with a small island and a pension. On May 30, 1814, the Treaty of Paris formally ended the War of the Sixth Coalition, restored the French monarchy under Louis XVIII, and reduced France's borders to those of 1792, erasing twenty years of conquest. The treaty followed Napoleon's abdication on April 11, 1814, forced by the defection of his marshals after allied armies entered Paris. Austria, Russia, Prussia, and Britain dictated the terms. France lost all territorial gains made since the Revolution: Belgium, the left bank of the Rhine, Savoy, and Nice reverted to their previous sovereigns or became independent states. The allies treated France with surprising leniency. There were no reparations. France retained its pre-revolutionary borders, which were larger than any other European state except Russia. The allied powers wanted a stable France under a legitimate monarchy, not a humiliated nation that would seek revenge. Talleyrand, representing Louis XVIII, skillfully exploited divisions among the victors to secure favorable terms. Napoleon was granted sovereignty over the island of Elba in the Mediterranean, with an annual pension of two million francs from the French government and permission to keep a personal guard of 1,000 soldiers. It was a remarkably generous arrangement for a man who had plunged Europe into two decades of war. The generosity proved insufficient. Napoleon spent less than a year on Elba. On February 26, 1815, he escaped with his guard, landed in southern France, and marched to Paris, gathering an army along the way. Louis XVIII fled. The Hundred Days ended at Waterloo on June 18, 1815. This time, the allies sent Napoleon to Saint Helena in the South Atlantic, 4,000 miles from the nearest land, where he died in 1821. The 1814 Treaty of Paris attempted to restore the European order that Napoleon had demolished. The 1815 Congress of Vienna, convened after his final defeat, succeeded more durably, creating a balance of power that prevented major European war for nearly a century.

Eighty thousand people came to watch 40 men drive cars around a brick track for six hours, and American motorsport was born. Ray Harroun won the first Indianapolis 500 on May 30, 1911, driving a Marmon Wasp to victory at an average speed of 74.6 miles per hour in a race that lasted 6 hours, 42 minutes, and 8 seconds. The Indianapolis Motor Speedway had opened in 1909 as a testing facility for the growing automobile industry. Its original crushed-rock surface disintegrated during early races, causing fatal accidents, and owner Carl Fisher ordered it repaved with 3.2 million bricks, earning the track its enduring nickname, "The Brickyard." Fisher conceived the 500-mile race as a single, spectacular annual event that would draw national attention. Harroun's Marmon Wasp was unusual. Most race cars of the era carried two people: a driver and a riding mechanic who watched for overtaking cars and monitored the engine. Harroun drove alone, mounting a rear-view mirror on his car, reportedly the first use of one in auto racing. His competitors protested, but officials allowed it. The race drew 40 starters on the first three-row grid. Harroun did not lead for most of the event, running a conservative pace while faster drivers burned out their tires and engines. His strategy worked. He crossed the finish line first and collected the $14,250 winner's purse. One driver, Arthur Greiner, was killed during the race when his car crashed on lap 13, and his riding mechanic Sam Dickson also died. Speed and death were inseparable in early motorsport, and the Indianapolis 500 would see fatalities at the track through much of the twentieth century before modern safety innovations reduced the toll. The race became an American institution, held every Memorial Day weekend except during the two world wars. The Indianapolis 500 remains the largest single-day sporting event in the world by attendance, routinely drawing over 300,000 spectators to watch cars circle the same rectangle of Indiana farmland that Carl Fisher paved with bricks 115 years ago.

NASA launched a spacecraft toward Mars knowing it would arrive to find a planet wrapped in a dust storm. On May 30, 1971, Mariner 9 lifted off from Cape Canaveral aboard an Atlas-Centaur rocket, bound for a rendezvous with Mars that would produce the first orbital survey of another planet and transform everything scientists thought they knew about the Red Planet. Mariner 9 was not the first Mars mission, but it was the first designed to orbit rather than fly by. Previous Mariner probes had captured a few dozen images during brief encounters, revealing a cratered, apparently dead world that resembled the Moon. The orbital mission was intended to map the entire surface at high resolution over months of observation. The spacecraft arrived on November 14, 1971, and immediately encountered a problem: a planet-wide dust storm, the largest ever observed, had engulfed Mars. For weeks, the cameras saw nothing but clouds of suspended dust. The two Soviet probes that arrived at the same time, Mars 2 and Mars 3, had no orbital capability and sent landers into the storm. Both failed. As the dust cleared in January 1972, Mariner 9 revealed a Mars that nobody had expected. Olympus Mons, the largest volcano in the solar system, rose 72,000 feet above the surrounding plain. Valles Marineris, a canyon system stretching 2,500 miles, dwarfed the Grand Canyon. Ancient river channels suggested that liquid water had once flowed on the surface. Mariner 9 transmitted 7,329 images over nearly a year of operation, mapping 85 percent of the Martian surface before its attitude control gas was exhausted. The data rewrote planetary science. Mars was not a dead moon analog but a geologically complex world with a dramatic history of volcanism, erosion, and possibly liquid water. The mission directly influenced the Viking program that landed on Mars in 1976 and every subsequent Mars mission through Perseverance. Mariner 9 taught scientists where to look and what to look for, turning Mars from a point of light into a world.

Marcel Bich died on May 30, 1994, at age 79, leaving behind the Bic empire he had built by democratizing everyday products that people previously considered too expensive to discard. Born on July 29, 1914, in Turin, Italy, to French parents, he grew up in France and worked in the ink manufacturing industry before purchasing a damaged factory in the Paris suburb of Clichy in 1945. His first product was a refillable mechanical pencil. His obsession with manufacturing efficiency led him to study the Hungarian-Argentine inventor László Bíró's ballpoint pen design and develop a version that could be produced cheaply enough to sell as disposable. The BIC Cristal pen, launched in 1950, was a revelation. It cost a fraction of existing ballpoint pens, wrote reliably, and was designed to be thrown away when empty. Bich had solved the engineering problem of producing an airtight ball-and-socket mechanism at industrial scale, maintaining tolerances measured in microns across millions of units. Within a decade, Bic was selling millions of pens daily. He applied the same philosophy to lighters in 1973 and disposable razors in 1975, entering markets dominated by established players and undercutting them on price while matching them on functionality. The strategy was identical each time: invest heavily in manufacturing technology to achieve unit costs so low that disposability became economically rational. The BIC lighter became the world's best-selling lighter. The BIC razor challenged Gillette's dominance in the low-end shaving market. At the time of Bich's death, BIC employed over 6,000 people and operated factories on four continents. His fortune was estimated at over $1 billion.