In the convulsive years between 1920 and 941 Americans were first dazzled by unprecedented economic prosperity and then beset by the worst depression in their history. It was the era of Model T s rising incomes scientific management electricity talking movies and advertising techniques that sold a seemingly endless stream of goods. But is was also a time of grave social conflict and human suffering. The Crash forced Hoover and then Roosevelt and the nation to reexamine old solutions and address pressing questions of recovery and reform economic growth and social justice. The world beyond America changed also in these years making the country rethink its relation to events in Europe Latin America and Asia. The illusion of superiority slowly died in the 1930s sustaining a fatal blow in December 1941 at Pearl Harbor.