Captured by Burgundian allies of England and sold to the English crown, Joan of Arc was tried by a pro-English ecclesiastical court on charges of heresy and cross-dressing. Denied legal counsel and pressured into confusing recantations, she was condemned and burned in the marketplace of Rouen. Her ashes were thrown into the Seine to prevent relic-hunting, but her legend only grew, and she was canonized nearly 500 years later.

After months negotiating uneasily with the Zamorin of Calicut, Vasco da Gama's small Portuguese fleet left the Malabar Coast loaded with spices, opening a direct maritime route between Europe and India that bypassed Arab and Venetian middlemen. The voyage, though costly in lives, proved enormously profitable and launched Portugal's seaborne empire in Asia, triggering centuries of European colonial competition across the Indian Ocean.

Heavy rains overwhelmed the South Fork Dam, owned by an exclusive fishing club whose wealthy members included Andrew Carnegie and Henry Frick. The resulting wall of water and debris obliterated the industrial town of Johnstown, killing over 2,200 people in one of America's deadliest disasters and spurring the young Clara Barton's American Red Cross into its first major relief operation.

Heavy rains overwhelmed the South Fork Dam, owned by an exclusive fishing and hunting club whose wealthy members included Andrew Carnegie and Henry Clay Frick. The resulting flood wave, reaching heights of 60 feet, obliterated Johnstown within minutes. It remains one of the deadliest disasters in American history and became a landmark case in the development of American disaster relief through Clara Barton's Red Cross.

Signed near midnight in Pretoria, the treaty ended a war that had cost tens of thousands of lives, including over 26,000 Boer civilians who died in British concentration camps. The Boer republics lost their independence but received promises of eventual self-government, a pledge fulfilled with the Union of South Africa in 1910.

After nearly three years of guerrilla warfare, scorched-earth British tactics, and the deaths of tens of thousands of Boer civilians in concentration camps, Boer leaders signed the Treaty of Vereeniging, surrendering their independence in exchange for eventual self-government. The war's brutal methods, including the internment of Boer women and children, provoked international outrage and left a legacy of bitterness that shaped South African politics for generations.

Introduced in 1908, the Model T had revolutionized manufacturing through Ford's moving assembly line and revolutionized daily life by making automobile ownership affordable for ordinary families. By 1927, competition and changing tastes forced Ford to retire the aging design in favor of the Model A, closing a chapter that had transformed American industry and culture.

After a narrow 1960 referendum among white voters, South Africa cut ties to the British Crown, with Charles Robberts Swart becoming its first state president. The move came as apartheid drew growing global condemnation, and South Africa withdrew from the Commonwealth days later rather than face expulsion over its racial policies.

After a narrow whites-only referendum, South Africa left the British Commonwealth and declared itself a republic, ending 51 years of dominion status. Prime Minister Hendrik Verwoerd, chief engineer of apartheid, used the moment to consolidate Afrikaner nationalist power. The change had no effect on the country's brutal racial segregation, which continued for another three decades until the fall of apartheid in the early 1990s.

ABBA's glam-tinged 'Waterloo' triumphed at the 1974 Eurovision Song Contest, held in Brighton, England, beating out entries from across Europe. The win catapulted the previously modest Swedish quartet to international stardom, and within a few years ABBA became one of the best-selling music acts in history, with hits like 'Dancing Queen' and 'Mamma Mia' defining the disco era worldwide.

By late May 1986, tens of thousands of soldiers, miners, and workers - later called liquidators - were laboring under extreme radiation to contain the wreckage of Chernobyl's Reactor 4. Helicopter pilots dumped sand, lead, and boron onto the burning core while engineers began planning the concrete sarcophagus that would eventually seal the site. Many liquidators received radiation doses far exceeding safe limits, and the true human cost was concealed by Soviet authorities for years.

Students from the Central Academy of Fine Arts erected a towering statue modeled loosely on the Statue of Liberty in Tiananmen Square, a defiant symbol for the pro-democracy protests that had gripped Beijing for weeks. The statue stood for less than a week before Chinese troops crushed the demonstrations on June 4, but it became one of the movement's most enduring images.

The identity of Deep Throat had been one of American journalism's most closely guarded secrets since 1972, known only to reporters Bob Woodward, Carl Bernstein, and editor Ben Bradlee. Felt, the FBI's former associate director, confirmed the revelation through his family, closing one of the last great mysteries of the Watergate scandal that brought down President Richard Nixon.