The entry of this country into the war in late 1950 ruined the U S plan for victory?

What did Porsche manufacture during World War 2? What day was ninth of September 1944? What did the Knights do during the day? How did Washington and his army get to Valley Forge? How were blacks discriminated against in the union army? Who officially commanded the confederate army? What was the 'final straw' that pushed president Wilson to declare war on Germany? What weapons were used by each side in the battle of Fort Donelson? What year did Trojan magnums go on sale? What did Paul Tibbets think about dropping the atomic bomb? Did Chief Sitting Bull die in the Wounded Knee Massacre? How much damage was done at shermans march? Can Louis Zamperini be considered a modern hero? What happened as a result of the treaty of brest-litosvsk? Why is the battle of sabine pass important? Why were both sides of the Cold War hesitant to start a war? Is Emilio aguinaldo really a hero? What was the cost per soldier and equipment during World War 1? How did Johnson and the Radicals come into conflict? Did Britain sink any of France's ships in world war 2?