The terms teapot dome watergate and iran-contra are most closely associated with

The terms are related with presidential scandals. 
Scandals have tormented the American administration nearly since the establishing of the nation. There have been major and minor embarrassments amid the organization of numerous if not the greater part of the presidents. The Watergate scandal which occurred under Nixon.

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.