During the Middle Kingdom ( 2255-1650 B.C.E ) the Pharaohs began to work for the welfare of people. The whole Egypt was reunited under one rule and the period of Middle Kingdom is being called as golden age of Egypt because of economic, political and social stability of the period. Trade, arts and literature flourished during this period. The Pharaoh in the Middle Kingdom used to be "shepherd of his people" charged with the task of building public works and producing for the welfare of the Egyptians.