Why do historians classify ancient Sumer as a civilization?

When pay is made public, people evaluate how equitable their pay is in light of the pay other people are receiving. the problem in this case is that dwight and guillermo have found out that others are getting paid more than they do for the same work. what are they likely to do under these circumstances

What are the relation of community dynamics and community action to applied social sciences?

Does increased security engender feelings of increased safety or does it increase the fears that people have?