The world is interconnected through many links. One of the links is economic. The economies of the world are connected via trade and transactions. There is a huge number of transactions taking place on a daily basis between people belonging to different countries. Thus the world is in itself an economy.
There are many chances that this economy underperforms due to various reasons. A major reason for this underperformance is a failure of one or other economy inside the world if a country faces a financial downturn it definitely affects other countries also.
History shows that there are many cases of such economic crisis that have happened across the globe. These have lasted for years or sometimes decades. Their immediate effects can be easily seen in the economic performance of a country. Almost all the financial institutions get affected in some way or the other. Many of them even fail to sustain. Unemployment rise is also a common outcome of such debt crisis. These crises act as an example and a lesson for future generations.