Later, such documents were used for money transfer by Middle Eastern merchants, who had used the prototypes of bills of exchange ("suftadja" or "softa") from the 8th century to present. Such prototypes came to be used later by the Iberian and Italian merchants in the 12th century. In Italy in the 13–15th centuries, bills of exchange and promissory notes obtained their main features, while further phases of their development have been associated with France (16–18th centuries, where the endorsement had appeared) and Germany (19th century, formalization of Exchange Law). The first mention of the use of bills of exchange in English statutes dates from 1381, under Richard II; the statute mandates the use of such instruments in England, and prohibits the future export of gold and silver specie, in any form, to settle foreign commercial transactions. English exchange law was different than continental European law because of different legal systems; the English system was adopted later in the United States.