The implementation of manufactories always bothered me because I have no idea what they are supposed to be. Are they meant to be factories ala the industrial revolution? That's what some achievements and the manufactories institution implies, and yet that cannot be possible because they are available far too early. Are we supposed to believe that agriculture was industrialized in 1500, and the only limiting factor was how much money the state could spend it? That's very silly and not realistic at all. And if they're not meant to be factories, then what the heck are they? Their current gameplay purpose seems to reward countries with lots of money by giving them even more money.