Shaka, founder of the Zulu Empire, was killed on this day in 1828. / On this day in 1939, Junko Tabei, a Japanese mountaineer and the first woman to summit Mount Everest, was born.

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Alexandria of Bavaria died on this day in 1875. / On this day in 1897, the now-famous editorial answering Virginia O'Hanlon's question about whether Santa Claus exists was printed in the New York Sun.

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The Battle of the Sexes tennis match between Billie Jean King and Bobby Riggs took place on this day in 1973. / The inaugural Cannes Film Festival opened in France on this day in 1946.

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Hikers discovered Ötzi the Iceman on this day in 1991. / On this day in 1957, the first fully contained underground detonation took place at the Nevada Test Site.

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Constantine the Great united the Roman Empire on this day in 324. / On this day in 1895, Daniel David Palmer performed what's considered the first chiropractic adjustment.

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The Camp David Accords were signed on this day in 1978. / On this day in 1925, Mexican artist Frida Kahlo was seriously injured in a bus accident that altered the course of her life.

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The Grito de Dolores launched the Mexican War of Independence on this day in 1810. / On this day in 1979, the Strelzyk and Wetzel families escaped from East Germany to West Germany in a homemade hot air balloon.

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The Crash at Crush took place on this day in 1896. / On this day in 1963, the 16th Street Baptist Church in Birmingham, Alabama, was bombed in an act of terrorism by white supremacists.

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U.S. President William McKinley died on this day in 1901, having been shot by an assassin on September 6. / On this day in 1921, Constance Baker Motley, the first Black woman to be named a federal court judge, was born.

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Phineas Gage was struck through the skull with a tamping iron on this day in 1848. / On this day in 1922, a fire in Smyrna in Asia Minor -- present-day İzmir, Turkey -- began blazing through the city.

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