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Ukrainian War of Independence: The All-Ukrainian Central Executive Committee outlaws the Makhnovshchina by decree, igniting the Bolshevik–Makhnovist conflict.
Giuseppe Verdi's opera I Lombardi alla prima crociata receives its first performance in Milan, Italy.
Pan Am Flight 759 crashes in Kenner, Louisiana, killing all 145 people on board and eight others on the ground.
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