Ancient Egypt had the longest unitary, political and cultural history of any Mediterranean civilization. It was held without interruptions from 3000 B.C. to the IV century A.D. The nature of the country made all of its land fertile by its extension to the Nile, as well as its relative isolation from external cultural influences. This gave rise to a uniform artistic style that underwent few changes over its many centuries. Ancient Egypt reached its maximum territorial expansion under the reign of THUTMOSIS III (1480-1448 BC).