, 1899). Modern historians suppose that the wealth of the
Bjarmians was due to their profitable trade along the
Northern Dvina, the
Kama River and the Volga to
Bolghar and other trading settlements in the south. Along this route, silver coins and other merchandise were exchanged for pelts and walrus tusks brought by the Bjarmians. In fact, burial sites in modern
Perm Krai are the richest source of
Sasanian and
Sogdian silverware from
Iran. Further north, the Bjarmians traded with the Sami. It seems that the Scandinavians made some use of the Dvina trade route, in addition to the
Volga trade route and
Dnieper trade route. In 1217, two Norwegian traders arrived in Bjarmaland to buy pelts; one of the traders continued further south to pass to
Russia in order to arrive in the
Holy Land, where he intended to take part in the
Crusades. The second trader who remained was killed by the Bjarmians. This caused
Norwegian officials to undertake a campaign of retribution into Bjarmaland which they pillaged in 1222. The 13th century seems to have seen the decline of the Bjarmians, who became tributaries of the
Novgorod Republic. While many Slavs fled the
Mongol invasion northward, to
Beloozero and Bjarmaland, the displaced Bjarmians sought refuge in
Norway, where they were given land around the
Malangen fjord by
Haakon IV of Norway in 1240. More important for the decline was probably that, with the onset of the
Crusades, the trade routes had found a more westerly orientation or shifted considerably to the south. When the Novgorodians founded
Velikiy Ustiug, in the beginning of the 13th century, the Bjarmians had a serious competitor for the trade. More and more
Pomors arrived in the area during the 14th and 15th centuries, which led to the final assimilation of the Bjarmians by the
Slavs. ==Later use==