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
Anglo-Saxon architecture was introduced from the Continent, as in the now built-over additions to Westminster Abbey made from 1050 onwards, already influenced by Norman style. In recent decades architectural historians have become less confident that all undocumented minor "Romanesque" features post-date the Norman Conquest. Although once common, it has been incorrect for several decades to use the plain term "Saxon" for anything Anglo-Saxon that is later than the initial period of settlement in Britain. Early Anglo-Saxon buildings in Britain were generally simple, constructed mainly using timber with thatch for roofing. Generally preferring not to settle within the old Roman cities, the Anglo-Saxons