The interconnection of the European routes with routes of caravans comings of Central Asia, China and India gave to origin to the formation of a complex net of cities and involved routes in the European commercial activity of sc.XIV. The process of intensification of the commerce favored the growth of the old cities Romans of the region of the Mediterranean, over all in the center and north of the Europe Occidental person, with the formation of new urban nuclei. In these cities new forms appear of social organization, where integrant of an activity branch, if they organize in professional associations, with the objective to guarantee the supplying of the cities, co-ordinating the production and inspecting the quality and the price of the products. As well as in the feudals you they commanded the servants, in the city the bourgeois ones controlled the company responsible for the regional commerce and international as well as the work of employees of the artisan production, beyond financing new businesses, making loans, to change currencies of different regions, etc. Even so resistance existed on the part of the small craftsmen, the bourgeois ones had exerted the control on the great cities of the Europe Occidental person, having presided over the urban advice and in some Italian and German cities to control the power directly politician.
Financing the Cruzades and supporting the Popes in its fights politics, the bourgeois ones had increased its relations with the Church, and this in turn protejia them of the tolerant practical governing attacks and in relation to the profit. Beyond sponsoring all these social innovations, cultural politics and, the bourgeois ones had established a new economic mentality. They did not see the work as a divine punishment, but as an important and useful activity for the European society of sc.XV. such direct thought or indirectly was spread for the other social groups.