アメリカドルはいつ生まれた？
The history of the United States Dollar refers to more than 240 years since the Continental Congress of the United States authorized the issuance of Continental Currency in 1775. On April 2, 1792, the United States Congress created the United States dollar as the country's standard unit of money. The term "dollar" had already been in common usage since the colonial period when it referred to eight-real coin (Spanish dollar) used by the Spanish throughout New Spain.
1775