On the other hand, the exchange of women is observed universally, and doubtless exerts an extraordinarily strong influence in the development of peaceable intercourse between neighboring tribes, and in the preparation for barter of merchandise. The story of the Sabine women, who threw themselves between their brothers and their husbands, as these were about to engage in battle, must have been an actuality in a thousand instances in the course of the development of the human race. All over the world, the marriage of near relatives is considered an outrage, as “incest,” for reasons not within the scope of this book.[74] This directs the sexual longing toward the women of neighboring tribes, and thus makes the loot of women a part of the primary intertribal relations; and in nearly all cases, unless strong feelings of race counteract it, the violent carrying off of women is gradually commuted to barter and purchase, the custom resulting from the relative undesirability of the women of one’s own blood in comparison to the wives to be had from other tribes.[75]*
Where division of labor made at all possible the exchange of goods, the relations among the various tribes would thereafter be made serviceable to it; the exogamic groups gradually become accustomed regularly to meet on a peaceful basis. The peace, originally protecting the horde of blood relations, thereafter comes to be extended over a wider circle. One example from numberless instances: “Each of the two Camerun tribes has its own ‘bush countries,’ places where its own tribesmen trade, and where, by intermarriage, they have relatives. Here also exogamy shows its tribe-linking power.”
These are the principal lines of growth of peaceful barter and traffic; from the right to hospitality and the exchange of women, perhaps also from the exchange of fire, to the trade in commodities. In addition to this, markets and fairs, and perhaps also traders, were almost uniformly regarded as being under the protection of a god who preserved peace and avenged its violation. Thus we have brought the fundamentals of this most important sociological factor to the point where the political means enters as a cause to disturb, rearrange, and then to develop and affect the creations of the economic means.
(b) TRADE AND THE PRIMITIVE STATE
There are two very important reasons why the robber-warrior should not unduly interfere with such markets and fairs as he may find within his conquered domain.
The first, which is extra-economic, is the superstitious fear that the godhead will avenge a breach of the peace. The second, which is economic, and probably is the more important—and I think I am the first to point out this connection—is that the conquerors can not well do without the markets.
The booty of the primitive victors consists of much property which is unavailable for their immediate use and consumption. Since valuable articles at that period exist in but few forms, while these few occur in large quantity, the “marginal utility” of any one kind is held very low. This applies especially to the most important product of the political means, slaves. Let us first take up the case of the herdsman: his need of slaves is limited by the size of his herds; he is very likely to exchange his surplus for other objects of greater value to him: for salt, ornaments, arms, metals, woven materials, utensils, etc. For that reason, the herdsman is not only at all times a robber, always in addition he is a merchant and trader and he protects trade.
He protects trade coming his way in order to exchange his loot against the products of another civilization—from the earliest times, nomads have convoyed the caravans passing through their steppes or deserts in consideration of protection money—but he also protects trade even in places conquered by him in prehistoric times. Quite the same sort of consideration which influenced the herdsmen to change from bear stage to bee-keeper stage, must have influenced them to maintain and protect ancient markets and fairs. One single looting, in this case, would mean killing the hen that lays the golden eggs. It is more profitable to preserve the market and rather to extend the prevailing peace over it, since there is not only the profit to be had from an exchange of foreign wares against loot, but also the protection money, the lords’ toll, to be collected. For that reason princes of feudal states of every stage of development extended over markets, highways and merchants, their especial protection, the “king’s peace,” often indeed reserving to themselves the monopoly of foreign trade. Everywhere we see them busily engaged in calling into being new fairs and cities by the grant of protection and immunity.