How Dollar Became World Currency? How it became the global currency?

How America's STRATEGY made US DOLLAR the MOST POWERFUL CURRENCY in the WORLD?
A global currency is one that is accepted for trade throughout the world. Some of the world's currencies are accepted for most international transactions. The most popular are the U.S. dollar, the euro, and the yen. Another name for a global currency is the reserve currency.
According to the International Monetary Fund, the U.S. dollar is the most popular. As of the fourth quarter of 2019, it makes up over 60% of all known central bank foreign exchange reserves. That makes it the de facto global currency, even though it doesn't hold an official title.
The next closest reserve currency is the euro. It makes up 20% of known central bank foreign currency reserves.1 The chance of the euro becoming a world currency was damaged by the eurozone crisis. It revealed the difficulties of a monetary union that's guided by separate political entities.

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