OF THE CAUSES OF IMPROVEMENT IN THE PRODUCTIVE POWERS OF LABOUR, AND OF THE ORDER ACCORDING TO WHICH ITS PRODUCE IS NATURALLY DISTRIBUTED AMONG THE DIFFERENT RANKS OF THE PEOPLE. +sMjUgLq93H8BvDdVSyY+N03bB1BnqrhUf9mCHAKE6mrGXfWYiUUAGBdQK3Nheg+