Why is the US Dollar the Global Currency?

The US dollar

A global currency is one that may be used for international trade. Most international transactions accept some of the world’s currencies. The most common currencies are the US dollar, euro, and yen. The reserve currency is another name for a global currency.

The US dollar is the most widely used currency, according to the International Monetary Fund. It accounts for over 59% of all known central bank foreign exchange reserves as of the fourth quarter of 2021. Despite the lack of a formal designation, it has become the de facto world currency.

The euro is the next closest reserve currency. It accounts for 20% of all known foreign currency reserves held by central banks. The eurozone crisis has harmed the euro’s chances of becoming a global currency. It exposed the challenges of a monetary union governed by two political entities.

It should come as no surprise that the United States of America is the world’s leading superpower; from its formidable military force to its dominant economy, the US is unquestionably one of the world’s most powerful nations. How did they get there, though? How did the United States Dollar become the world’s reserve currency?

What is a reserve currency?

A reserve currency is a foreign currency held by a central bank or the government as part of the formal foreign exchange reserves of a country. Reserves are kept by countries for a variety of reasons, including to weather economic shocks, pay for imports, service debts, and control the value of their own currency. Since much international trade is conducted in dollars, many countries are unable to borrow money or pay for foreign goods in their own currencies, and thus must maintain reserves to ensure a steady supply of imports during a crisis and to reassure creditors that debt payments denominated in foreign currency can be made.

A central bank can influence the value of its country’s currency by purchasing and selling currencies on the open market, which can create stability and sustain investor confidence. For example, if the value of the Nigerian Naira begins to decline during an economic slump, the Central Bank of Nigeria can intervene and bid up its value using its foreign reserves. Countries can intervene to prevent their currencies from appreciating and making their exports more affordable.

Most countries prefer to keep their reserves in a currency with large and open financial markets because they want to be able to access them in an emergency. Government bonds, such as US Treasuries, are frequently held by central banks. The Treasury market in the United States remains the world’s largest and most liquid bond market—the easiest to buy into and sell out of.

The IMF recognises eight main reserve currencies: the Australian dollar, the British pound sterling, the Canadian dollar, the Chinese yuan, the euro, the Japanese yen, the Swiss franc, and the United States dollar. By far the most widely held reserve currency is the US dollar.

The creation of the Bretton Woods Agreement

The United States entered World War II far later than it did World War I. Before entering the war, the United States was the principal source of weaponry and other supplies to the Allies. By the end of the war, the United States had the majority of the world’s gold. The countries that had expended their stockpiles could no longer return to the gold standard.

In 1944, delegates from 44 Allied countries met in Bretton Woods, New Hampshire, to devise a system for managing foreign money that would benefit all countries equally. The delegation determined that global currencies would no longer be connected to gold, but instead would be fixed to the US dollar. That’s because the greenback was, itself, linked to gold.

The Bretton Woods Agreement was named after this agreement. It established central bank power, requiring them to maintain fixed exchange rates between their currencies and the dollar. In exchange, the US would give US dollars for gold on demand. In cases where the value of their own currencies became too weak or too strong relative to the dollar, countries had some control over their currencies. To control the money supply, they could buy and sell their currency.

Unpegging the dollar from gold

While the United States reaped many benefits from its status as the world’s official currency, there is always the flip side. Because of the deficit spending utilised to fund the Vietnam War, the US flooded the market with paper money, devaluing the value of the dollar. Foreign countries began to demand that the US government convert their country’s dollar reserves into gold as fears about the dollar’s stability grew.

Rather than allowing investors to exhaust all of the gold stockpiles at Fort Knox (United States Bullion Depository), President Nixon made the final decision to decouple the US dollar from gold. This gave rise to today’s floating exchange rates (also known as fluctuating exchange rates), in which a country’s currency price is determined by the forex market based on supply and demand in relation to other currencies, essentially a free-for-all. Of course, such severe steps in the United States have had disastrous effects, including stagflation, a scary mix of high inflation and high unemployment, as well as high oil costs. However, outstanding economists such as Milton Friedman and Paul Volker devised numerous fiscal strategies that helped the US economy recover and overcome stagflation.

The Bottom Line

The United States’ reserve position is largely determined by the size and strength of its economy, as well as the dominance of its financial markets. Despite trillions of dollars in foreign debt and ongoing huge deficit expenditures, the United States continues to enjoy international trust and confidence in its capacity to meet its obligations. As a result, the US dollar remains the world’s most powerful currency. In the years ahead, it may remain the most important global currency.

However, the dollar’s present number one position is in question. In this more interwoven global economy, countries like China and Russia believe a new one-world currency, unbacked by any single sovereign, is a long time.

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