Yahoo 知識+ 將於 2021 年 5 月 4 日 (美國東岸時間) 停止服務。從 2021 年 4 月 20 日 (美國東岸時間) 起，Yahoo 知識+ 網站將轉為僅限瀏覽模式。其他 Yahoo 資產或服務，或你的 Yahoo 帳戶將不會有任何變更。你可以在此服務中心網頁進一步了解 Yahoo 知識+ 停止服務的事宜，以及了解如何下載你的資料。
- 1 十年前最愛解答
Hitler thought that the Jew will bring back luck to German and so he started genocide aimed to kill all the Jews.After the end of the WWII,there were fewer of jews left.
Beside, he annoyed with people who didn't agree with him and send them to the concentration camp and killed all of them with toxic gases.
Finally,Hitler is aggressive which he was started the expanding pilicy.As he invaded other places,for example poland, it pay the way of the starting of WWII which bring horrible effects.
I can only think of 3 reasons...資料來源： memory in F.3