By the early 20th century, a massive influx of immigrant labor, the adoption of mass-assembly methods, and profuse capital investment has transformed America into an industrial powerhouse. The roaring economy is derailed by the stock market crash of 1929, plunging the country into the Great Depression and years of domestic turmoil. With millions thrown out of work, financial institutions and family farms bankrupted by the thousands, and the manufacturing base decimated, downtrodden Americans pay little attention to brewing conflicts in Europe and the Far East. They instead demand the Roosevelt Administration focus on America’s woes rather than meddling in overseas affairs. There is little choice, as years of austerity have taken a toll on the size and quality of the US military.