I'd like to make a couple of comments. When the player sells any goods to the natives he receives from them the Europeans money. This is wrong. Trading with natives must be based on the simpliest exchange goods (barter). Thus, to improve the trading with natives we have to add a some correction on the stage when 80 coins transforms in 20 furs. How difficult to realize such correction? Any ideas? The variant with "trading contracts" realized in Dawn of a New Era (DoaNE) could be the next step in trading with natives, when both - the human and native players - at least know each other a number of turns. The variant proposed by Nightinggale with permanent "trading stations" outside the player territory could be the much more advanced step in trading with natives, when both - the human and native players - not only know each other very well but have rather high level of relations. In such form the trading with natives looks much more close to reality. I know that the source codes of DoaNE is not available (why???) and at the moment the ideas of Nightinggale are just ideas to dicsussion. But how about to make a first step (see, my sample) in the improving the trading with natives?