Development of the banknote began in the Tang Dynasty during the 7th century, with local issues of paper currency, although true paper money did not appear until the 11th century, during the Song Dynasty.
A contract typically does not have to be notarized. A notary public (or simply notary) provides an acknowledgment that the signature appearing on the document is that of the person whose signature it purports to be. There is a requirement that some documents be notarized, such as a real property deed.
Percentage requirements for signatures on statutory initiatives range from a low of 2 percent of the resident population in North Dakota (13,452 for 2012 ballot access), to a high of 15 percent of the total number of votes cast in the preceding election in Wyoming (28,624 signatures for 2012 ballot access).