A huge problem in EU3, at least early on before numerous xpacs, was that there were no gold-sinks for the new world and african natives, leading them to have huge amounts of gold by the time Europeans reached them. Euros could then easily farm them for gold, repeatedly robbing everything they had for ridiculous amounts. From playing the demo it looks like this is still going to be an issue as I see some natives with 5k+ gold. A friend playing the modded demo as Prussia even robbed CHEROKEE, certainly not the richest of native nations, of 4800+ gold when he reached them. Not sure how to fix this, but it is kind of lame that colonizers can farm them for huge amounts of monies and pretty much never have to worry about their budget again. Natives really need some kind of gold sink to spend ducats on.