Blust's Austronesian subgrouping places the deepest divisions in Taiwan

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Robert Blust's comparative work on Austronesian subgrouping established that almost all of the family's primary branches are Formosan — spoken on Taiwan by a small minority of the family's speakers — while the thousand or more languages from Madagascar to Rapa Nui descend from a single primary branch, Malayo-Polynesian. Because genealogical diversity accumulates where a lineage has been longest, that structure identifies Taiwan as the homeland, on evidence internal to the languages and independent of any archaeology.

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