8. Diet of Worms (Luther) Jan 28 to May 25, 1521 (jan 28, 1521 – may 25, 1521)

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The Diet of Worms that opened on January 28, 1521, was the imperial assembly where Martin Luther was summoned to defend his writings before Emperor Charles V, ultimately refusing to recant (withdrew his writings) and setting the stage for his condemnation.

Note, The Diet of Worms is like the State of the Union — it’s a recurring type of assembly, so there can be many of them.

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