Where was Knaanic language used?

In the eastern Caucasus
In northern Scotland
In Central Europe
In Palestine
Knaanic, also called Judaeo-Czech, is an extinct West Slavic Jewish language, formerly spoken in the lands of the Western Slavs, notably the Czech lands, but also the lands of modern Poland, Lusatia and other Sorbian regions. It became extinct in the Late Middle Ages and was replaced by Yiddish.
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Katarzyna DÄ…browska
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Illustration: Quinn Dombrowski