After the United States attacked Iraq, it did not ship a barrel of oil from Iraq, but was denominated in dollars, which led to the dollar becoming the main currency of international trade, and countries around the world began to reserve dollars, which also led to the return of funds to the United States to support its development.

At the same time due to

1, the stability of the dollar

2. The improvement of America's position in the international community

3. The expansion of American trade

4. The credit and yield of US Treasury bonds can obtain stable returns (if you buy bonds from other countries, the promised yield may not be convertible).

It also supports the US dollar as the first choice for foreign exchange reserves of all countries.

When the vast majority of goods in the world are denominated in dollars, the dollar has established the status of the world's common currency.

This is unshakable and irreplaceable by other currencies.

This is not only determined by its stable value. Therefore, it is naive to think that everything will replace the dollar.

Americans are smarter than you think, and Wall Street is the originator of finance.

In order to let the world's funds return to the United States, they have come up with various methods, including designing various financial derivatives.

The global dollar settlement system has been established, which makes any currency inferior to the dollar.

When everyone (all countries in the world) saved a lot of dollars and bought a lot of US Treasury bonds,

The dollar began to depreciate, and the printing press started to run, printing money crazily.

At this time, other countries are riding a tiger.

Moreover, if you reserve other countries' currencies, you may face national credit problems and income problems.

Although the dollar has depreciated again, the United States is still a country that keeps its word.

His national debt yield is also stable, (buying other bonds may lead to losses, while buying US national debt yields are stable).

People who buy these things are big funds, and big funds need big plates. Buy gold, buy hundreds of trillions, and the price is pulled up by you.

You cashed in, and no one can take it away. When you threw it away, the price was smashed again. You bought high and sold low, but you lost money.

Buying billions of US Treasury bonds is not a problem. This is national credit, and the plate is big enough. No matter how big the money is.

This is why big money still chooses US Treasury bonds, which is equivalent to supporting the US dollar.

Whether holding US Treasury bonds or US dollars, it is equivalent to storing US dollars as foreign exchange reserves.