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    <div class="moz-cite-prefix">At a guess, it has to do with the fact
      that the Han Chinese were farmers, with a stable state society. 
      Complex societies have many benefits compared with the
      hunter-gather lifestyle, but preservation of languages isn't one
      of them.<br>
      <br>
      I can think of two books that deal with this issue: Nick Ostler's
      <i>Empires of Words</i> talks about China in particular, and Jared
      Diamond's recent <i>The World Until Yesterday</i> talks about the
      phenomenon in general.  I don't have those books on hand, but I
      imagine the citations (or "further reading" in Diamond's case)
      might have more on the topic.<br>
      <br>
      The historical replacement of the Yue languages with the Han is
      fairly well-documented; and it seems to be widely accepted that
      the spread of Indo-European languages was linked to the spread of
      agriculture and/or domestic horses (I've never even seen an
      alternative theory).  It's not a stretch to suggest that the
      spread of agriculture is also responsible for the prehistoric
      dominance of Sinitic languages in the North China Plain.<br>
      <br>
      As for the rule of ecology, it's been suggested many times that
      intensive cultivation initially developed in more marginal
      environments.  Later, the agriculturalists often have the numbers
      to take over the more productive environments for farming.  Though
      it's interesting that the article claimed the Central Valley is
      less productive than the coast.  Apart from Napa Valley,
      originally inhabited by the Wappo, none of the the first-settled
      areas are ones that I think of as major agricultural areas, though
      some of them are home to major fisheries.<br>
      <br>
      Regards,<br>
      Luke<br>
      <br>
      On 08/21/2013 10:01 PM, Zoe Tribur wrote:<br>
    </div>
    <blockquote cite="mid:f9d6926cee82c2d1b68bc56f23aec0b6@uoregon.edu"
      type="cite">Interesting, but one question that I have is why you
      don't see large-scale language shift. Instead, you have "areal
      patterns" from long-term multilingualism. It's not just that there
      are lots of languages, it's the fact that there are so any
      language families that makes the Pacific Coast so interesting.
      Western China, for example, has lots of languages but far fewer
      language families. This kind of situation suggests that language
      shifts took place in the distant past, although another
      explanation is that these places were uninhabited when the first
      speakers of Tibeto-Burman or whatever showed up, and then they
      spread, but in some of these areas, the first explanation is more
      likely. So what was different about the Pacific Coast that people
      living there didn't switch languages? I'm guessing that the
      ecological conditions in which they lived might have something to
      do with it, allowing many groups to live side-by-side, but that
      can't be the whole story.
      <br>
      <br>
      <br>
      On 2013/08/20 14:04, Phil Cash Cash wrote:
      <br>
      <blockquote type="cite">UNDERSTANDING HOW MIGRATION PATTERNS
        SHAPED NATIVE ETHNICITY, LANGUAGE
        <br>
        <br>
         August 20, 2013
        <br>
        <br>
         During the past 12,000 years, the rich diversity of Native
        American
        <br>
        [1] ethnic and language groups of California took shape as
        migrating
        <br>
        tribes. They settled first on the lush Pacific coast and then in
        <br>
        progressively drier, less-vegetated habitats, according to a new
        study
        <br>
        led by the University of Utah and published online in
        the_Proceedings
        <br>
        of the National Academy of Sciences (PNAS [2])_.
        <br>
        <br>
        “Trying to explain why linguistic diversity is high in some
        places
        <br>
        and low in others has been a big issue in anthropology,”
        says Brian
        <br>
        Codding [3], an assistant professor of anthropology.
        <br>
        <br>
        “For a number of years, people have shown a correlation between
        <br>
        ecological diversity and linguistic diversity,” he adds. “What
        we did
        <br>
        in this study that was different was to look at it over time –
        to
        <br>
        actually see the process through which different populations
        came to
        <br>
        live side-by-side as neighbors or replaced one population with
        <br>
        another. We’re showing how the diversity actually developed over
        <br>
        time.”
        <br>
        <br>
         Access full article below: 
        <br>
        <br>
<a class="moz-txt-link-freetext" href="http://www.redorbit.com/news/science/1112927109/native-american-migration-shape-ethnicity-language-082013/">http://www.redorbit.com/news/science/1112927109/native-american-migration-shape-ethnicity-language-082013/</a>
        <br>
        [4]
        <br>
        <br>
        <br>
        <br>
        Links:
        <br>
        ------
        <br>
        [1] <a class="moz-txt-link-freetext" href="http://www.redorbit.com/topics/native-american/">http://www.redorbit.com/topics/native-american/</a>
        <br>
        [2]
        <br>
<a class="moz-txt-link-freetext" href="http://www.pnas.org/content/early/2013/08/13/1302008110.abstract?sid=ebe20e72-a555-402b-a4c6-7444c4e82b22">http://www.pnas.org/content/early/2013/08/13/1302008110.abstract?sid=ebe20e72-a555-402b-a4c6-7444c4e82b22</a>
        <br>
        [3]
        <a class="moz-txt-link-freetext" href="https://faculty.utah.edu/u0850178-Brian_F_Codding/contact/index.hml">https://faculty.utah.edu/u0850178-Brian_F_Codding/contact/index.hml</a>
        <br>
        [4]
        <br>
<a class="moz-txt-link-freetext" href="http://www.redorbit.com/news/science/1112927109/native-american-migration-shape-ethnicity-language-082013/">http://www.redorbit.com/news/science/1112927109/native-american-migration-shape-ethnicity-language-082013/</a>
        <br>
      </blockquote>
    </blockquote>
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