Original sentence: At this time, the Japanese attack on Pearl Harbor was still nine months away and America had not yet entered the war, though the first stages of the Holocaust had begun (the Einsatzgruppen had already begun to conduct mass killings in Eastern Europe and the T-4 Euthanasia Program was operating) the Wannsee Conference was more than a year in the future and stories of genocide by the Nazi Party were neither widely known nor believed.The book was used by Nazi Germany and modern Holocaust deniers as propaganda to demonstrate that the Jews were plotting against Germany, though the book was a little-noticed self-published work that was, in the words of the 1945 Journal of Modern History,  "little more than self-indulgence in dire vituperation by a man who sees Germany as the sole cause of the world's woes
Edited sentence: Although the T-4 Euthanasia Program was in operation, the Wannsee Conference was more than a year in the future and stories of Jewish sufferings under the Nazi Party were not widely known or believed.At this time, the Japanese attack on Pearl Harbor was still nine months away and America had not yet entered the war.Contemporary Holocaust deniers have also found use for the book, citing it as evidence of a Jewish-related conspiracy.Opponents of this "revisionist" claim state that the book was a little-noticed self-published work, "little more than self-indulgence in dire vituperation by a man who sees Germany as the sole cause of the world's woes.The Holocaust would begin the following year.The book was used by Nazi Germany to demonstrate that the Jews were plotting against Germany