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Much more recently, from around 1600 BCE, amber from the Baltic coast seems to have found its way into Egypt.

http://books.google.com/books?id=NAwGLzAfyhEC&printsec=front...

Another example, from the article: "there has been other signs of contacts, including bones of domesticated pigs in Germany in Stone Age hunter-gatherer settlements. "There are trade networks that pre-date agriculture,""

Regarding the amber trade, see also http://en.wikipedia.org/wiki/Amber_Road .

That link gives a 404 page.

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