From GameWatcher: “Returning to its historical roots, Anno 1800 throws players right in the middle of the Industrial Revolution, tasking them with building, expanding and maintaining their cities. Neither of those can be done without money and, as bankruptcy spells doom for your city building efforts, knowing a bit about Anno 1800 how to make money quick can be quite helpful.”
Source: N4G PC Anno 1800 Money Guide – How To Make Money Quick