KnowraProto-Indo-EuropeansLinked fromLinked fromThe 23 pages that link to Proto-Indo-Europeans, each with the reason it gives.All 23Broader topic 4Related 3Narrower topic 16Rasmus RaskRelated: Rask’s comparative work contributed evidence for the historical relationships later used to reconstruct this ancestor.Neogrammarian hypothesisRelated: Regular correspondences made systematic reconstruction of this unattested language possible.PalatalizationRelated: Palatalization helped distinguish major historical stages in the development of Indo-European languages.