If the Phœnicians really were “Semites,” they furnish an additional example of incomparable importance of the transformation of land into “sea Bedouins,” i. e., warlike robbers; and the same is probably true for the majority of the numerous peoples who looted the rich countries around the Mediterranean, whether from the coast of Asia Minor, Dalmatia, or from the North African shore. These begin from the earliest times, as we see from the Egyptian monuments (the Greeks were not admitted into Egypt),[23] and continue to the present day: e. g., the Riff pirates. The North African “Moors,” an amalgamation of Arabs and of Berbers, both originally land nomads, are perhaps the most celebrated example of this change. There are cases in which sea nomads--that is to say, sea robbers--arise immediately from fishermen, with no intermediate herdsman stage. We have already examined the causes which give the herdsmen their superiority over the peasantry: the relatively numerous population of the horde, combined with an activity which develops courage and quick resolution in the individual, and educates the mass as a whole to tense discipline. All this applies also to fishermen dwelling on the sea. Rich fishing grounds permit a considerable density of population, as is shown in the case of the Northwest Indians (Tlinkit, etc.); these permit also the keeping of slaves, since the slave earns more by fishing than his keep amounts to. Thus we find, here alone among the redskins, slavery developed as an institution; and we find, therefore, along with it, permanent economic differences among the freemen, which result in a sort of plutocracy similar to that noted among herdsmen. Here, as there, the habit of command over slaves produces the habit of rule and a taste for the “political means.” This is favored by the tense discipline developed in navigation. “Not the least advantage of fishing in common is found in the discipline of the crews. They must render implicit obedience to a leader chosen in each of the larger fishing boats, since every success depends upon obedience. The command of a ship afterward facilitates the command of the state. We are accustomed to reckon the Solomon Islanders as complete savages, and yet their life is subject to one solitary element, which combines their forces, namely, navigation.”[24] If the Northwest Indians did not become such celebrated sea robbers as their likes in the old world, this is due to the fact that the neighborhoods within their reach had developed no rich civilization; but all more developed fishermen carry on piracy.