steel and iron weaponry of the american natives.........

[David]

BTW, here's a link to a description of the potlatch. It doesn't involve the destuction of ones possessions, but the giving away of them. Hard to say when the tradition began, but it was banned by both the Canadian and U.S. governments in the late 19th century. That law held in Canada until 1951.
http://en.wikipedia.org/wiki/Potlatch