No matter the Great Depreciation in the 85 years ago or the global financial crisis recently happened. Central bank take an important role during it. With the development of the financial innovations and the derivatives productions. The supervision ability of central bank should be improve. Also, the cooperation is especially important. In the Great Depreciation, there is no cooperating between countries but we can see from this global financial crisis. Cooperation can help other countries pass the crisis e.g. Iceland financial crisis. Because of Economic Integration need the countries all over the world to cooperation.
Further thinking:
Despite the world economic situation now get better, but what should central bank do to avoid financial crisis in the future is a question we should consider. In my opinion, the attitude is an important factor. It conclude the attitude central bank towards entire economy and the consumer towards consumption. I will think about it in the future.