If the firm produces 12 units, will the firm's economic profit be positive, negative, or zero? Explain.

your answer is,

When economic profit is zero, a firm is earning the same as it would if its resources were employed in the next best alternative. If the economic profit is negative, firms have the incentive to leave the market because their resources would be more profitable elsewhere.

i honesty don't know, good luck tho dawg

nothing certain is known about what happened, but it seems that the country declined gradually, perhaps due to bad government, or, more likely, due to a series of bad harvests, which resulted in widespread and recurrent famine.