Gilded Age (end of 19th cent., beginning of 20th cent.):
Gilded Age (end of 19th cent., beginning of 20th cent.) Unprecedented expansion and growth
Second Industrial Revolution
Slide10:
http://www.pbs.org/wgbh/amex/carnegie/gildedage.html
http://www.newyorksocialdiary.com/node/748
http://en.wikipedia.org/wiki/Billionaire