Read the passage, and then answer the question. An archeologist discovers an official-looking seal during an archeological dig. The seal is cylindrical in shape and is much like what a king would use when signing letters. Not long after, the archeologist finds a clay tablet covered in cuneiform script. The archeologist translates the words on the tablet. He discovers that it states a set of laws and rules that the citizens of the civilization must have had to follow. Based on the passage, what conclusion can be drawn about the civilization?