First task is to define profitability. At the base level cash accounting and accrual account generate different amounts. Also how do we factor in things like increase/decrease in slave property and land property in with the final crop of cotton and other products. Lets assume I invest 1,000,000 in land, slaves, buildings and cotton seed. Each year I make 5% net profit or 50,000 but each each year the market value of my assets changes 5% also some years my increase in wealth is 0 and others 10,000. What is my profitability? Results of my farming operations or the total that plus change in market value.