The answer is very clear. No one can able to unleash the real causes of economic crisis incidental since 1930s in various parts of world economy. There is no consensus amongst major schools of economic philosophy (Pre-Classicals, Classicals and Post Classicals) on the causes of crisis. That's why manifestations can be explained not the real causes and it is evident too in case of Greece Bankruptcy and USA's Shut down.
Antoniades, A. (2007). Examining facets of the hegemonic: the globalization discourse in Greece and Ireland. Review of international political economy, 14 (2), 306-332.
Drea, E. (2011). Repeating the Mistakes of Austerity? Lessons for Greece for the Irish Economic Experience of the 1920s and 1930sGPSG Greek Politics Specialist Group (GPSG) Working Paper# 08.
KNIGHT, D. M. (2011). Crisis and Prosperity: Status, Accountability and Time in Central Greece. (PhD), Durham University., Durham.
The second of these two papers makes some suggestions for what Greece could have done differently:
Welburn, J.W. and Hausken, K. (2015), “A Game Theoretic Model of Economic Crises,” Applied Mathematics and Computation 266, 738-762.
Welburn, J.W. and Hausken, K. (2016), “Game Theoretic Modeling of Economic Systems and the European Debt Crisis,” Computational Economics, Forthcoming 10.1007/s10614-015-9542-3.
Article A game theoretic model of economic crises
Article Game Theoretic Modeling of Economic Systems and the European...