Janne,
You and Roc have both done a great job in the history background of the Vikings. A few extra bits here to add some more depth.
I don’t remember who posted the comments about the Damascus steel but a little extra needs adding here. Damascus steel is used to describe what many times is probably more correctly termed pattern welding, or pattern-welded steel. The following gives a good basic explanation of the two terms.
http://www.fact-index.com/p/pa/pattern_welding.html
http://www.octavia.net/anglosaxon/Patternweldedswords.htm
http://www.vikingsword.com/serpent.html
(One thing I’d love to hear about are ways we can simulate this.)
As I understand it, most of the raiding forays only lasted a century or a bit longer: roughly very late 700s to very early 900s. After that, it strikes me more as being more along the lines of ‘military’ operations, with the Danelaw area of Britain being a result. And as you noted, raiding parties were outnumbered by the number of trading parties.
As you commented though, trade was always an important aspect. A good many of the eastern Irish cities either started as, or became, Viking trade centers; e.g., Dublin, Wexford, and Waterford. York was a major site of Viking trade as well. The Coppergate excavations are giving indications of just how wide ranging these traders operated; one dyestuff identified from Coppergate, comes from a lichen native to North America… and this from around 1000AD I believe.
While the Norwegians and Danes were primarily trading in Western Europe, the Swedes headed East and established trade routes beginning in Kiev and Novgorad and ending in Constantinople. One tribe, the Rus (Swedish?) may well be the basis for the modern name of Russia. Birka (near Stockholm?) was one of the trade cities where ‘east’ and ‘west’ met as a trading hub(?).
In Constantinople we also have the beginnings of what would later be called the Varangian Guard. These were Vikings who fought as mercenaries for the Byzantine Empire. Some of the earliest records refer to these troops as fighting in Italy (935) and Crete (949). Originally, only those men skilled in the ax were accepted, but this requirement slowly ended over time.
Regarding colors and textiles, here’s an excerpt from the following url:
http://www.cs.vassar.edu/~capriest/vikdyes.html
“The chemical evidence of textiles from several different sites seems to point to a preponderance of particular colors appearing in particular areas: reds in the Danelaw, purples in Ireland, and blues and greens in Scandinavia proper (Walton 1988, 18). This seeming preference could of course be explained by any number of variables--availability of dyestuffs, the differing site climates, or the sheer vagaries of archaeological discovery. However, although it is carefully hedged, there is a hypothesis in the scientific world that this might possibly reflect regional color preferences rather than archaeochemical factors. It is pleasant to think that this sort of "Viking heraldry" might have been practiced.”
Gary