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There are more than six thousand human languages, each one unique. For the last five hundred years, people have argued about how important language differences are. It was only in the twentieth century, in the work of Franz Boas and his students, that an attempt was made to engage seriously with the reality of language specificities.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.