Anglo-Norman language general use of the word "acre" for land measurement in Normandy until metrication in the 19th century, but these words are probably linguistic traces of Saxon or Anglo-Scandinavian settlements between the 4th and the 10th centuries in Normandy. Otherwise the direct influence of English in mainland Norman (such as "smogler" - to smuggle) is from direct contact in later centuries with English, rather than Anglo-Norman. When the Normans invaded England, Anglo-Saxon literature had reached a very high level of development. The important Benedictine monasteries both wrote chronicles and guarded other works in Old English. However, with the arrival of the
Influence of French on English from the 1066 conquest that proto-English became massively impregnated with Old French, then modern French. It should be noted, however, that only French influenced English in the centuries following the conquest. The reverse contribution of English to French was only real from the eighteenth century. The arrival of William the Conqueror and his barons significantly changed the linguistic situation in England. Norman was essentially imposed in the upper layers of society. The Anglo-Saxon dialects were supplanted by Norman in the circles of the court and aristocracy, justice and the Church. The influential circles, who came from Normandy and settled in