The root cause of the Great Recession is liberal culture which produces lower class people who don't pay their bills and who have bad credit. That is why Clinton lowered the mortgage lending standards.
Derivatives were the main cause. Do you even know what a derivative is? In this case it was an investment that would hedge a mortgage by betting it would default. If you allow one derivative per mortgage it is a zero sum game. But the law allowed for one mortgage to back multiple derivatives. If the mortgage failed there would not be funds to pay off the many derivatives. It puts a multiplier effect on bad mortgages. That caused many financial institution to default.
You are correct that the democrats made mortgages easier to get for low income people but the bigger driver were banks allowing middle and high income individuals to qualify for loans they should not of.
You obviously have very little knowledge of investing and our banking system.
If you allow one derivative per mortgage it is a zero sum game. But the law allowed for one mortgage to back multiple derivatives. If the mortgage failed there would not be funds to pay off the many derivatives.
It's still zero sum.
If Goldman insured the same $500,000 mortgage, 5 times and the mortgage fails, Goldman pays out $2,500,000 and the insured parties receive $2,500,000.
It puts a multiplier effect on bad mortgages.
How many mortgages had a CDS written against them even once, let alone multiple times?
Probably a really small number.
That caused many financial institution to default.
How many firms went under because they wrote CDS?
How many went under just because they wrote/held crappy mortgages?