What if the us never joined WW2?

What country has the most hydrogen bombs? Why might it been difficult for Sparta to communicate with its allies in Macedonia? What side was George McClellan on north or South? William Tecumseh sherman's fighting technique was known as what? When did Battle of Batoche happen? Who is character hung himself in the movie Top Gun? When did the last vet. of World War II die? 13.00 in military time? What was the least deadliest war in the US? How did each sides resources and strategies affect the early battles of the wars? What year did World War 2 start and with who? When and where was an atom bomb using plutonium first tested? Has World War I or 2 had a larger impact on the world today? What is post traumatic stress called in the civil war? When did First Intifada happen? Where was the 4077th MASH stationed in the US? How have machine guns improved since the time of World War 1? During world War II what was the primary role for the navy in the Atlantic ocean? When did Battle of El Roble happen? Antebellum was the period before what war?