The term “sterling area”, which came into existence immediately after Great Britain's departure from gold on September 21, 1931, has become increasingly current, so that at the present time it is generally accepted in the terminology of international economics. The term sterling area, or sterling bloc, is necessarily extremely loose. In no sense are the countries contained in this group bound together in a formal monetary union. Nor can the boundaries of the area be defined precisely. As generally understood, however, the sterling area includes those countries both within and outside the British Empire whose currencies are closely linked to the British pound and whose monetary policies are governed more or less directly by those which may be followed from time to time by the British Exchequer and the Bank of England. It includes, in addition to the Dominions and colonies, Argentina, the Scandinavian countries (whose currencies were more promptly and more closely linked to sterling in the 1931 crisis than even those of the Dominions), Finland, Portugal, Egypt, Palestine, and some smaller countries.
In contrast to the gold bloc, whose scope is limited strictly to currency problems, the sterling bloc is also to a certain degree an economic bloc. That is, trade within the sterling area represents a fairly large proportion of the total foreign trade of the countries included in that group. The attempt to forge closer links of currency and trade with the countries of this group has now become a well recognized principle of British foreign policy. The instruments which Great Britain has used in forging these closer links are represented by the Ottawa Agreements of 1932, by the reciprocal trade pacts with non-Empire countries, by the maintenance of stable exchange rates with these countries, by securing favourable treatment in exchange allotment, by the development of central banks in the Dominions, and by giving preferential treatment in the matter of international loans, which are, or at least may be, of vital importance in maintaining stability of exchanges in relation to sterling.