What do you think Tocqueville meant when he described urban areas full of poor factory workers as; "From this filthy sewer pure gold flows." - Alexis de Tocqueville a.
People found a way to use sewage for fertilization of fields, yielding better crops.

b.
Meaning, the poor filthy areas were populated by people who worked in factories, making others wealthy.

c.
Tocqueville grew up very poor, literally homeless and in the sewers of the city; he became wealthy after creating the assembly line.

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. 

Recordings of musical performances