Emperor Gia Long unified Vietnam by conquering Hanoi.
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300,000 Jews from a ghetto in Warsaw were deported and executed by Nazi rule.
The Staten General of the Netherlands declared that the country no longer recognized Philip II of Spain as its ruler.
Palermo, Sicily was liberated by US forces.
Japan published the first print of the world's most popular manga-comic series, 'One Piece.'
Marvel's 'Avengers: Endgame' became the most financially successful movie of all time.
