300,000 Jews from a ghetto in Warsaw were deported and executed by Nazi rule.
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Woodstock '99 concert took place in Rome, New York, US.
Emperor Gia Long unified Vietnam by conquering Hanoi.
33-year-old Katharine Lee Bates wrote the famous song 'America the Beautiful.'
Palermo, Sicily was liberated by US forces.
Marvel's 'Avengers: Endgame' became the most financially successful movie of all time.
