Hitler's blunders contributed to the allied victory; ex, withholding the Panzer reserves away from local control of Rommel prior to the Normandy invasions. His stance of not retreating, led to the debacle of the Falaise pocket which destroyed many of his best divisions in the west, among them the 12th SS, Panzer Lehr, and others. Hope this helps.
Answer:
They caused work slowdowns
C… the first two seem more like strengths
The states and the congress. If a constitutional amendment is going to be ratified, first it has to get votes of support from 2/3 of both the house of representatives and the senate, after which it goes on voting in individual states, and if 3/4 of states ratify it then it becomes an official amendment of the constitution.