Eastphalian
Eastphalian is an Indo-European language spoken in Germany. Glottolog rates it threatened.
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Eastphalian, or Eastfalian (German: Ostfälisch, Eastphalian and Low Saxon: ostfälsch Platt), is a Low German language spoken in southeastern parts of Lower Saxony and western parts of Saxony-Anhalt in Germany.
From Wikipedia · Eastphalian language · CC BY-SA 4.0