Re: Blench et al. (below) on a South-East Asian origin of Munda (and other Austroasiatic languages), the opposite position has been argued by P. Donegan and D. Stampe (U. Hawai’i, Mānoa) :
The polarity of Munda vs Mon-Khmer recalls that of ancient vs modern Indo-European:
synthetic head-last vs analytic head-first (Lehmann 1974). But Munda and Mon-Khmer are
far more divergent. Indo-European was never/w/ysynthetic, but many Munda languages are...
The Munda (South Asian) and Mon-Khmer (South-East Asian) branches of the Austroasiatic
language family are so exactly opposite at every level of structure that Sir George Grierson
in his Linguistic Survey of India remarked that if they were descended from a common ...