Since 1943, it was becoming clearer that Germany would fold under the pressure of the Allied forces. The Russians were only a day or so from overtaking the chancellary. Hitler urged to escape to Berchtesgarden (where he owned a home), but instead chose to commit suicide with his wife Eva.
After Austria-Hungary declared war on Serbia on July 28, 1914, there was a flurry of activity across Europe. The first, and arguably most important, event happened on the same day. Russia, Serbia's main ally, mobilized its military and prepared to defend Serbia.
Answer:
the American revelation was an ideological and political revolution