What event sparked Kristallnact to occur?

On November 9, 1938, in an event that would foreshadow the Holocaust, German Nazis launch a campaign of terror against Jewish people and their homes and businesses in Germany and Austria. The violence, which continued through November 10 and was later dubbed “Kristallnacht,” or “Night of Broken Glass,” after the countless smashed windows of Jewish-owned establishments, left approximately 100 Jews dead, 7,500 Jewish businesses damaged and hundreds of synagogues, homes, schools and graveyards vandalized.

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there were a lot of changes in wars like that and thing evolved

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