The real death of the League was in December 1935 [in its response to the Abyssinian Crisis], not in 1939 or 1945. One day it was a powerful body imposing sanctions, seemingly more effective than ever before; the next day it was an empty sham, everyone scuttling from it as quickly as possible. â€"Origins of the Second World War, A. J. P. Taylor According to this author, what caused the end of the League of Nations?