But it is not solely the municipal authority which attacks the speculations born of the capitalistic spirit. The Church steps forward, and under the name of usury forbids indiscriminately the lending of money at interest, sales on credit, monopolies, and in general all profits exceeding the _justum pretium_. No doubt these prohibitions themselves attest the existence of the abuses which they endeavor to oppose, and their frequency proves that they did not always succeed. It is none the less true that they were very burdensome and that the pursuit of business on a large scale found itself much embarrassed by them. The increasing specialization of commerce embarrassed it much more. At the beginning the merchants had devoted themselves to the most various operations at once. Wandering from market to market, they bought and sold without feeling in need of centring their activity on this or that kind of products or commodities, but from about 1250 this is no longer the case. The progress of economic evolution has resulted in localizing certain industries and in restraining certain branches of commerce to the groups of merchants best suited to their promotion. Thus, for example, in the course of the thirteenth century the trade in fine cloth became a monopoly of the towns of Flanders, and banking a monopoly of certain merchant companies of Lombardy, Provence, or Tuscany. Thenceforward commercial life ceases to overflow at random, so to speak. It has a less arbitrary, a more deliberate, and consequently a more embarrassed quality.