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Your search for ′When was the First Crusade?′ returned the following results:
on August 15, 1096 (Av 9, 4856 HC)
The First Crusade officially commenced on August 15, 1096 (Av 9, 4856 HC), killing 10,000 Jews in August's first month and destroying Jewish communities in France and the Rhineland.
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in 1095 until 1099
the first crusade took place in 1095 until 1099.
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on August 15, 1096,
The First Crusade officially commenced on August 15, 1096, killing 10,000 Jews in August's first month and destroying Jewish communities in France and the Rhineland.
Source: