The progressive elimination of the borders for capital flows, since the end of the Eighties, had given to the central banks a major role in the elaboration and the implementation of the economic policies. At the origin, they were in charge of the supply of payments tools and of coming to help the States when these ones were going through a crisis or to finance a war effort. The economists under Milton Friedman and the Chicago school aegis gave then to them a determining mission in the achievement of the major equilibriums. Through the management of the money supply, they ...