A more likely scenario...
...would be for The federal reserve,which is several private,and powerful world banks who answer to themselves and no one else,decided to call in all the loans from a certain segment or class of debtors,like farmers for instance.
Every time you sign the papers for a loan check,or use a credit card,you are agreeing to their terms,and one of the last things it says in almost every loan paper I have signed is that these conditions may be changed at the dicretion of the financial institution,so they can do pretty much what they want.
The banks really do own the world,and the governments of the world.The american economy would be easily repaired if the FED would introduce more money into the system,and keep the interest rates in check,and the government could raise the minimum wage too,but there would not be enough profit in that for the banks and governments,and too much profit for the people,the people's rights must be gradually removed or they will have too much power and become a threat to those who have power through tyrrany,the greedy ones are always the ones in control of everything....