Khakaure Senusret III (also written as Senwosret III or the hellenised form Sesostris III) was a pharaoh of Egypt. He ruled from 1878 BC to 1839 BC during a time of great power and prosperity, and was the fifth monarch of the Twelfth Dynasty of the Middle Kingdom. He was a great pharaoh of the Twelfth Dynasty and is considered to be perhaps the most powerful Egyptian ruler of the dynasty. Consequently, he is regarded as one of the sources for the legend about Sesostris. His military campaigns gave rise to an era of peace and economic prosperity that reduced the power of regional rulers and led to a revival in craftwork, trade and urban development. Senusret III was one of the few kings who were deified and honored with a cult during their own lifetime.