題目：「歐洲列強外交政策旨在維持和平優先，但經過經濟大蕭條後，逐漸被戰爭所取代。」你同意嗎？試以1919-1939年的歐洲歷史解釋你的答案。
Question: "The foreign policy of the European powers was aimed at keeping peace first, but after the Great Depression, it was gradually replaced by war." Do you agree? Explain your view with the reference during inter war period(1919-1939).