In this case the stagnation was caused by a lack of banking regulations. Look up Glass-Steagall Act ( http://www.nytimes.com/topic/subject/glasssteagall-act-193

In this case the stagnation was caused by a lack of banking regulations. Look up Glass-Steagall Act ( http://www.nytimes.com/topic/subject/glasssteagall-act-1933 http://www.nytimes.com/topic/subject/glasssteagall-act-1933 ) The act was repealed and banks blew up the economy - the same way they did in 1929.