1, because the English word for dollar is dollar, and the pronunciation of the first letter is similar to the Chinese word for "knife", so many young people who are slowly evolving like to use American knives instead of dollars. At present, the US dollar banknotes in circulation are all the banknotes issued since 1929. 1792 appeared after the passage of the American mint act. At present, the issuance of US dollars is controlled by the Federal Reserve system.
2. Starting from 19 13, the United States established a federal reserve system and issued federal reserve bonds. More than 99% of the banknotes in circulation are federal reserve notes. The competent department for issuing US dollars is Congress, and the Federal Reserve Bank is responsible for the specific issuance business. After World War II, the United States forced major European countries to agree that international monetary settlement must adopt the US dollar, so the US dollar was widely used as a reserve currency in countries outside the United States.
First, the main landscape pattern on the front of the US dollar bill is the head of a person, and the main color is black. The main landscape pattern on the back is architecture, and the main color is green, but there is little difference between different versions, such as the back of 1934 is dark green, the back of 1950 is grass green, and the back of 1963 is dark green. The signature above is the signature of the finance minister, and different release years are different finance ministers.
2. There are six denominations of coins circulating in the United States: 1, 5, 10, 25, half dollar, 1 yuan. In American history, the heads of six famous presidents appeared on these six denominations respectively.
The design of 1 cent is a profile portrait of the famous President Lincoln in American history, which was released on the occasion of Lincoln's birthday100th anniversary (1909). The design of 5 cents is to commemorate the 30th anniversary of Jefferson 1938, the drafter of the American Declaration of Independence.
10 cent was released on the first anniversary of the death of President Roosevelt, who implemented the "Roosevelt New Deal" (1946); Twenty-five cents is the most common token in the United States, which was issued on the 200th anniversary of the founding president of the United States (1932).