Proto-world is the name of the theory that all languages that humans speak have one origin language. It has been broadly rejected. [http://www.zompist.com/proto.html A refutation of the theory]
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Proto-world is the name of the theory that all [[family|families]] of languages that humans speak have one origin language. It has been broadly rejected. [http://www.zompist.com/proto.html A refutation of the theory].