article_snippet.sent: Bronze-working had not been developed at this time in Alaska, and researchers instead believe the artefacts were created in China, Korea or Yakutia. '
article_snippet.sent: We're seeing the interactions, indirect as the interactions are, with these so-called 'high civilisations' of China, Korea or YakutiaKorea or Yakutia,' Owen Mason, a research associate at the University of Colorado, told LiveScience. 'Native copper and meteoritic iron were hammered into a variety objects by late prehistoric inhabitants of arctic and subarctic North America,' reports the research team on the website Arctic Research Consortium. '
article_snippet.sent: [But] there is no evidence for the smelting, casting, or alloying of metals in the Western Hemisphere north of Mexico prior to the arrival of Europeans.
article_snippet.sent: Bronze-working had not been developed at this time in Alaska, and researchers believe the artefacts were created in China, Korea or Yakutia Korea or Yakutia Yakutia .
article_snippet.sent: Inside the house, tests on obsidian items – created by volcanic glass – had previously suggested tests on obsidian items – created by volcanic glass – came from the Anadyr River valley in Russia.
highlights_snippet.sent: But bronze-working had not been developed at this time in Alaska .
  
highlights_snippet.sent: Scientists believe artefacts were created in China, Korea or Yakutia .
  