 Violette Shamosh records that, at the Passover Seder, she could understand some of the passages in Aramaic but none of the passages in Hebrew.The Mongol invasion wiped out most of the inhabitants of Mesopotamia.Later, the original qeltu Baghdadi dialect became extinct as a result of massive Bedouin immigrations to Lower Mesopotamia and was replaced by the Bedouin influenced "gilit" dialect.