Usualy farmers would get food products made from the animal such as mild and eggs.
A peanut farmer would live in America... there are farms in Portland,Florida and Oklahoma hope i helpz
It would increse the money supply.
anything you wuold like to know.
Plague? It would need to be a doctor not a farmer. But if you meant famine, it would depend on the reason for that famine. Like purifying the soil if it contains bacteria or something of the like....