[MUSIC] Unlike the earlier uniform systems of first the gold standard and then Bretton Woods, today's exchange rate system fits into no tidy mold. Without anyone's having planned it, the world has moved to a hybrid system know as the managed float. It has these major features. First a few countries like the United States have a primarily flexible or floating exchange rate. In this approach, markets determine the currency's value, and there is very little intervention. Second, other major countries such as Canada, Japan, and more recently Britain have managed but flexible exchange rates. Under this system a country will buy or sell its currency to reduce the day to day volatility of currency fluctuations. A country may also engage in systematic intervention to move its currency toward what it believes to be a more appropriate level. Third, many countries, particularly small ones, peg their currencies to a major currency, or to a basket of currencies. Sometimes the peg is allowed to glide smoothly upward or downward in a system known as a gliding or crawling peg. some countries joined together in a currency block in order to stabilize exchange rates amongst themselves. These countries then allow their single currency to float flexibly relative to those of the rest of the world. The most important of these blocs is the European Union, which in 1999 moved to a single currency, the Euro. Finally, almost all countries tend to intervene either when markets become disorderly or when exchange rates seem far out of line with existing price levels and trade flows. Government exchange rate intervention occurs when the government buys or sells its own or foreign currencies to affect exchange rates. For example, the Japanese government on a given day might buy $1 billion worth of Japanese yen with US dollars. This would cause a rise in value or an appreciation of the yen. In general, a government intervenes when it believes its foreign exchange rate is out of line with its currency's fundamental value. An excellent historical example of such intervention on a broad scale is offered by the actions of the so called Group of Seven Nations. In 1987 this group, the US, Germany, Japan, Britain, France, Italy, and Canada agreed to stabilize the value of the dollar, relative to the other countries' currencies. The problem was that during the previous 2 years, the dollar had declined rapidly because of large US trade deficits. And the G-7 nations, other than the US, were worried that any further weakening of the dollar Would stifle their exports, and more broadly, disrupt economic growth. So these nations agreed to purchase large amounts of dollars to boost the dollar's value.