This essay examines the 2008 global financial crisis, focusing on whether Western nations could have prevented it. It details the role of subprime lending, the collapse of Lehman Brothers, and the subsequent economic recession. The essay highlights the impact on global markets, including the decline in investor confidence, reduced exports, and increased unemployment. It discusses the transmission mechanisms of the crisis, such as financial flows and trade disruptions, and the differential impact on developed and developing countries. The essay also touches upon the monetary policy responses, including currency devaluation, and the role of international organizations in mitigating the crisis's effects. Ultimately, the essay concludes that while the crisis's causes were complex and multifaceted, certain preventative measures could have potentially lessened its severity.