The South Sea Bubble of 1720 was a financial crisis in Britain marked by the dramatic collapse of the South Sea Company. Established to manage national debt with the promise of high returns, the company's shares skyrocketed amid feverish speculation. However, the company's inability to produce sufficient profits led to a loss of confidence and a sudden share price collapse. Many investors faced financial ruin, and the event led to reforms in corporate governance and increased skepticism towards speculative investments.