What is North Sea Germanic?
{{Infobox language family |name=North Sea Germanic |altname=Ingvaeonic |region=Originally the [[North Sea]] coast from [[Friesland]] to [[Jutland]]; today, worldwide |familycolor=Indo-European |fam2=[[Germanic languages|Germanic]] |fam3=[[West Germanic languages|West Germanic]] |child1=[[Anglo-Frisian]] |child2=[[Low German]] |glotto=nort3175 |glottorefname=North Sea Germanic |map=Germanic dialects ca. AD 1.png |mapcaption=The distribution of the primary [[Germanic languages]] in Europe in around AD 1: {{legend|Blue|[[North Germanic languages|North Germanic]]}} {{legend|Red|'''North Sea Germanic''', or Ingvaeonic}} {{legend|Orange|[[Weser-Rhine Germanic]], or Istvaeonic}} {{legend|Yellow|[[Elbe Germanic]] or Irminonic}} {{legend|Green|[[East Germanic languages|East Germanic]]}} }} '''North Sea Germanic''', also known as '''Ingvaeonic''' {{IPAc-en|ˌ|ɪ|ŋ|v|iː|ˈ|ɒ|n|ɪ|k}}, is a group of [[West Germanic languages]] that were first spoken in what is now northern [[Germany]], the [[Netherlands]], and [[Denmark]]. They were also spread to the [[British Isles]] in the [[Migration Period]]. The languages were [[Old Frisian]], [[Old English language|Old English]] and [[Old Saxon]]. They have become other languages since then and spread worldwide, especially the modern [[English language]]. The grouping was first proposed in ''Nordgermanen und Alemannen'' (1942) by German linguist and philologist [[Friedrich Maurer (linguist)|Friedrich Maurer]] as an alternative to the strict [[phylogenetic tree|tree diagrams]], which had become popular following the work of 19th-century linguist [[August Schleicher]] and assumed the existence of a special [[Anglo-Frisian languages|Anglo-Frisian]] group. The other groupings are [[Weser-Rhine Germanic|Istvaeonic]], from the [[Istvaeones]], which developed into [[Frankish language|Franconian]], and [[Elbe Germanic|Irminonic]], from the [[Irminones]], which developed into Upper German.<ref>Hans Frede Nielsen, ''Nordic-West Germanic relations'', in: ''The Nordic Languages: An International Han