Plautdietsch

Plautdietsch, or Mennonite Low German, was originally a Low Prussian variety of East Low German, with Dutch influence, that developed in the 16th and 17th centuries in the Vistula delta area of Royal Prussia, today Polish territory. The language is spoken in Canada, the United States, Mexico, Brazil, Bolivia, Paraguay, Uruguay, Peru, Honduras, Belize, and Argentina by over 300,000 Russian Mennonites.