The US dollar today is the most powerful currency in the world. This is the currency of international trade , but where does the sign $ come from, when was this sign adopted are interesting questions to search for.
Robert Morris was the first to use that symbol $ in official documents and in official communications with Oliver Pollock. And there are many theories in the history about the launch of this sign.
The most widely accepted theory, according to the Bureau of Engraving and Printing, goes back to the Spanish peso, which was accepted as the basic unit of value in colonial America during the late 1700s.
The sign evolved out of Spanish American scribal abbreviation "ps" for pesos. Reports states that the s gradually came to be written over the p developing a close equivalent to the "$" mark.