When the game developer says the difficulty is IMPOSSIBLE, they meant it, like drawing only 3 cards I was overwhelmed with the population growth in the late game. The End-Game project is so expensive, I think I wasted like 50 turns to farm the money and influence, and there it came the first useful thing to buy jewelries, because my influence income is in the negatives. I almost lost because of that, and at the last moment I sold almost everything and finally completed the end-game project.