Greece had to band together in order to help fight the Persians. However, conflicts arose. What were some of those conflicts and how did it impact Greece?

Both the han and the roman empire decline as a result of social unrest during their collapse.

Americans often speak of their country as one of several large regions.  these regions are cultural units rather than governmental units --  formed by history and geography and shaped by the economics, literature and folkways that all the parts of a region share. what makes one region different from another? a region's multicultural heritage as well as distinct demographic characteristics like age and occupation make regions different and special. within several regions, language is used differently and there are strong dialects. there are also differences in outlook and attitude based on geography.