I think you forgot to give the options along with this question. I am answering the question based on my research and knowledge. The outrage against Lindbergh's speech led to a steep decline in the membership of Ku Klux Klan. I hope that the answer has come to your help.
Answer:
The Treaty of Versailles
Explanation:
The Treaty of Versailles was the cause of distress and hardship on the German people. The treaty designed to punish Germany after the First World War. It humiliated and forced Germans to pay reparation to the Allied powers. During this period, Germans were facing political unrest, economic depression, unemployment in the country. Germans economy crashed in 1929 because of hyperinflation happened in 1923 when the Weimar government printed banknotes to pay reparations.
Answer: Explanation I agree
