The Bretton Woods Agreement was also aimed at preventing currency competition and promoting monetary co-operation among nations. Under the Bretton Woods system, the IMF member countries agreed to a system of exchange rates that could be adjusted within defined parities with the US dollar or, with the agreement of the IMF, changed to correct a fundamental disequilibrium in the balance of payments. The per value system remained in use from 1946 until the early 1970s.
The United States, under President Nixon, retaliated in 1971 by devaluing the dollar and forcing realignment of currencies with the dollar. The leading European economies tried to counter the US move by aligning their currencies in narrow band and then float collectively against the US dollar.


Fortunately, this currency war did not last long and by the first half of the 1970’s leading world economies gave up the fixed exchange rate system for good and floated their currencies in the open market. The idea was to let the market decide the value of a given currency based on the demand and supply of the currency and the economic health of the currency’s nation. This market is popularly known as the International Monetary Market or IMM. This IMM is not a single entity. It is the collection of all financial institutions that have any interest in foreign currencies, all over the world. Banks, Brokerages, Fund Managers, Government Central Banks and sometimes individuals, are just a few examples.
This is very much the present system of exchange of foreign currencies. Although the currency’s value is dependent on the market forces, the central banks still try to keep their currency in a predefined (and highly confidential) fluctuation band. They accomplish this by taking one or more of various steps.
The International Trade Organization that had been planned in the Bretton Woods Agreement could not be realized in the form initially envisaged - the US Congress would not endorse it. Instead, it was created later, in 1947, in the form of the General Agreement on Tariffs and Trade, which was signed by the US and 23 other countries including Canada. The GATT would later become known as the World Trade Organization. In recent years, the two international institutions created at Bretton Woods the World Bank and the IMF have faced a major challenge in helping debtor nations to get back on stable financial footing.