financial crisis

What were the main government failings that contributed to the severity of the 2008-9 financial crisis, and what regulatory changes would you make to prevent such a crisis in the future? Be sure to consider both institutions and policies.
Please use 4 sources including the two below
Marc Allen Eisner, The American Political Economy: Institutional Evolution of Market & State, Routledge, 2011
Howard Davies, The Financial Crisis: Who is to Blame? Polity, 2010