What is the origin of money? What are the conditions under which nations always have money, and under what circumstances need nations not use money? There are small tribes in Africa, and one in Australia, who live as the Sknepies and the Drevlyans lived in olden times. These tribes lived by breeding cattle and cultivating gardens. We become acquainted with them at the dawn of history, and history begins by recording the fact that some invaders appear on the scene. And invaders always do the same thing: they take away from the aborigines everything they can take,—cattle, corn, and cloth; they even make prisoners, male and female, and carry them away. In a few years the invaders appear again, but the people have not yet got over the consequences of their first misfortunes, and there is scarcely anything to take from them; so the invaders invent new and better means of making use of their victims. These methods are very simple, and present themselves nat...