in "anno 1701", every residential structure could be advanced to the uppermost class, so a city could be entirely made up of aristocrats by the end of a game. in anno 1404, a number of peasants are required to support a moderate amount of citizens who in turn support a number patricians and noblemen. there are several other factors that can impact the ratio of lower class to upper class, however. for instance, the number of envoys settled in the player's oriental settlements will satisfy a sum of the peasants and citizens required to support patricians and noblemen in occidental settlements.