Which global crash began after the failure of Lehman Brothers in September 2008?

The global crash associated with Lehman Brothers’ September 2008 failure was the Global financial crisis.

Lehman Brothers filed for bankruptcy on September 15, 2008, after losses tied largely to mortgage-related assets and an inability to secure a buyer or government rescue. The failure intensified an already developing credit crisis. Banks became reluctant to lend, short-term funding markets seized up, and stock markets around the world fell heavily.

The crisis had roots in the United States housing boom, risky mortgage lending, complex securitized products, excessive leverage, and weaknesses in financial regulation and risk management. The collapse of Lehman was therefore a major accelerant rather than the sole cause. Other institutions, including AIG, also required emergency support.

Governments and central banks responded with bank recapitalizations, guarantees, interest-rate cuts, and unconventional monetary policies. The downturn became the Great Recession, the deepest global recession since the 1930s. The event is sometimes called the 2008 crash, but its financial and economic effects began before 2008 and continued afterward.