Subprime Mortgage Crisis: The economic downturn caused by the collapse of the U.S. housing bubble and the subsequent defaults on subprime mortgages, which led to the failure of major financial institutions like Lehman Brothers.
Financial Deregulation: The process of removing or reducing government regulations and oversight in the financial industry, which contributed to the growth of risky lending practices and the eventual financial crisis.
Systemic Risk:The risk of a catastrophic event or collapse in one part of the financial system spreading to the entire system, as seen with the Lehman Brothers' bankruptcy and the ensuing global financial crisis.