Three months ago, Jerry witnessed a pedestrian get hit by a car. It was a gruesome scene, and a person was fatally injured. Since then, Jerry has had nightmares about it and avoids going back to the street where the accident occurred. He has difficulty concentrating and is easily startled by loud noises. He blames himself for being in the wrong place at the wrong time. What is the most appropriate diagnosis

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.