The document summarizes the causes and transmission of the global financial crisis. It discusses the pre-crisis situation of debt-driven growth, global imbalances, and weak financial regulation. The immediate trigger was the bursting of the US housing bubble in 2006. This led to a collapse in mortgage-backed securities and stock markets. The crisis then spread through remittances, capital flows, and trade to developing countries. Vulnerability to external shocks determined the degree of impact on different countries.