A financial crisis can usually be categorized as one of the five types:
The global financial crisis of 2008–2009 was triggered by the bubble and eventual crash of the US housing market towards the end of 2007. The situation was aggravated by the growth of the subprime mortgage market in the US and subsequent defaults. The constant decline in house prices in 2008 caused an increase in foreclosures on mortgages. Investors lost confidence in their holdings of mortgages in securitized assets. This caused a widespread demand for liquidity, adversely impacting the financial andmoney markets.