Question: Which natively spoken language in Kazakhstan was originally a Low Prussian dialect of East Low German, with Dutch influence ?
Sentence (from "Plautdietsch language"): Plautdietsch or Mennonite Low German, was originally a Low Prussian dialect of East Low German, with Dutch influence, that developed in the 16th and 17th centuries in the Vistula delta area of Royal Prussia.
Relevant evidence: Yes