Miguel's big graduation party had been planned for weeks. his best friend approached him the day before the party and told him, "i won’t be able to make it to your party because something came up." miguel was shocked. he felt that his best friend was either in big trouble over something or that they weren’t really friends after all. what kind of relationship rule was miguel following?

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.