Would Germany have won World War 1 if the US had not entered the war?
If you think about it, the U.S. became involved in both world wars because of the then in-office president ‘s sympathy for Britain. The casus belli used by the U.S. the sinking of the S.S. Lusitania by a German submarine, was merely a pretext to drag the whole nation, sternly opposed to getting entangled with European affairs, into the war. Germany had already inforrmed the U.S. about the oceanic war zones in the Atlantic, and attempted to disuade U.S. citizens from traveling on British or French vessels. Even to this day, the evidence of the U.S. made ammunition tranmsported as contraband on the S.S. Lusitania has been zealously kept from the public.The point here is: the Western Alles had the enormous advantage of the industrial support of the U.S. whether U.S troops fought on the battelefield or not.Ludendorff would not have launched the Spring Offensive of April 1918, if the U.S. troops had not been on their way to France. The Italians would have been unable to defeat the German-Austrian forces without the diversion of resources from the Western Front, since about a million soldiers had been freed from the Eastern Front after the capitulation of Russia. However, the British blockade had stressed the German industry to its limits, and even taking into account the conservation of forces by the Germans without the U.S. participation, the best they could have done was to threaten Paris once again, and strike a deal with the Allies. The actual German 1918 proved that defeating the Allies, eveni in the absence of the U.S. troops, would have been impossible. The best Germany could have expected was a peace in much more favorable terms.