Responding to tatef I think what they’re trying to say with that bit about ‘The Indian’s interest in European goods’ is that the native american’s are entering in to the marketplace in order to engage in a commodity in exchange for currency in exchange for a different commodity type circulation (C-M-C) which would be trade for the sake of trade (taking advantage of comparative advantage), as opposed to using money to purchase a commodity (stock, labor, a good abundant in one place and scarce in another) with the expectation of utilizing that commodity to get back their original outlay and realize a profit (M-C-M), which would be participating in trade purely for the accumulation of wealth. Also you can be rich in love but I’ve never heard of wealthy in love so I think wealth is meant to refer to currency.
note: bit about M-C-M is Marx’s General Formula for Capital