Penny Napoleonic Wars prompted the use of base metals in 1797. Despite the decimalization of currencies in the United States and, later, throughout the British Commonwealth, the name remains in informal use. No penny is currently formally subdivided, although farthings (¼ d.), halfpennies, and half cents have previously been minted and the mill (1/10¢) remains in use as a unit of account in some contexts. "Penny" is first attested in a 1394 Scots text, a variant of Old English ', a development of numerous variations including ', ', and '. The etymology of the term "penny" is uncertain, although cognates are
Old Quarter, Hanoi Hanoi lie outside this region, which was determined for being most dense in historical streets and for having maintained its historical character best. The official Old Quarter is part of the Hoàn Kiếm District. Its total area is about 100 ha and it counts 76 streets distributed over 10 wards. The residential and commercial area that is now the Old Quarter came to be during the Lý and Trần dynasties and was then located east of the Imperial Citadel of Thăng Long and along the Red River. During the Lê dynasty, scholar Nguyễn Trãi already mentioned some of the areas