Proto-Finno-Ugric is the reconstructed protolanguage for the Finno-Ugric languages, that is the ancestor of the Samic languages or Finnic languages , such as Finnish, and the Ugric languages, whose best known example is Hungarian. It has been suggested that the area where Proto-Finno-Ugric was spoken reached between the Baltic Sea and the Ural mountains.
According to Robert Austerlitz, Proto-Finno-Ugric had about seven cases; nominative, accusative, genitive, locative, allative, ablative, and adverbial.
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Where does Finnish come from? (Virtual Finland)