The main responsibilities of the king's involved participation in religious rituals, managing the affairs of the state in war and peace, writing laws and guiding the administration and execution of justice.Different kings had different responsibilities for each empire. Kings need to be able to show control in their empire or else his empire will fall. Therefore a king's responsibilities are very important. Priests were very powerful and important. They told people how to behave to keep the gods happy. Priests in Sumer and in Babylon were also the local doctors. If you got sick, you sent for a priest. The priests shaved their heads so that everyone knew they were priests. In Mesopotamia the priests had as much power and honor as the king did. Both men and women wore jewelry. Men wore long hair and long beards and wore a skirt type garment. Women wore long dresses with one shoulder bare. In the colder months they all wore cloaks made from wool to keep warm.They were mostly business people who owned land or manufacturing companies. The working class wore the same type garments as the rich only theirs were not of the same materials. They too wore jewelry although theirs was not made of gold or precious stones. They were farmers, skilled workers who made such things as pottery and spun thread, and merchants who sold goods. Sumerians did keep slaves. When they defeated another town or tribe in battle they would bring back the prisoners as slaves. The king and the priests kept most slaves, but wealthy Sumerians could buy slaves to work for them.
This pyramid shows the upper classes and the lower classes. Source:http://3.bp.blogspot.com
This image shows the daily life in Mesopotamia. The men are working through the hot sun making pottery. http://semanadelaciencia.cchs.csic.es/2010/sites/semanadelaciencia.cchs.csic.es.2010/files/Escribas%20Mesopotamia.jpg