1. The Great Depression: This was a severe economic crisis that began in the United States in the 1930s and spread to the rest of the world. The Great Depression caused widespread unemployment, poverty, and social unrest.
2. The Rise of Fascism: Fascism is a political ideology that emphasizes the importance of the state and the nation over the individual. Fascism often involves a strong leader, a military dictatorship, and a single-party state. Fascism was a major factor in the outbreak of World War II.