Analysis of information sources in references of the Wikipedia article "Lapita culture" in English language version.
What also spread with Lapita was the ancestral form (Proto-Oceanic) of the Oceanic Austronesian languages still spoken across much of the region today; indeed, it is this continuity of language which allows us to identify through historical linguistic methods the proximate Lapita homeland in the Bismarcks as being the linguistic homeland for all Oceanic languages [...]. [...] And of course, along with the language novel concepts of kinship, social organization and religion also spread.