ok im the americans and i start out fine, learning diff techs, building cities,etc. i have science rate at 50% and luxury rate at 0% ill always start out making 8-9 gold per turn then all of a sudden i start losing 9-10 gold per turn after a few thousand years. i lower the science rate until it gets to where even at 10% im still losing money. then when i switch governments to either republic or monarchy im still losing money til my treasury is gone. im kinda new at this game and i need some help.