Didn't know that.   Agriculture became the main source of income for Rome after the merchants, craftsmen, trade specialists, and like that  saw the ship was sinking and went east  to the eastern empire in 313 AD.  Now, you are saying, back in Rome,  they couldn't even work the fields.  ----- Notice that Wall Street now wants investors to put their money on China and India, both in deep debt, because they believe that is where the future and the growth is.  Of course, they hate the administration.