A pond has several lilies in it. Every day, the number of lilies in the pond double. If it takes 5000 days for the lilies to completely cover the pond, how many days does it take for the lilies to cover half the pond?
What is the limit as x approaches 0 of (sin x ) / x ?
What effect did WWII have on the American economy?
When the United States entered WWII, an immense demand for weapons war materials was created. This, in turn, created a large number of jobs, which allowed many Americans - still reeling from the Great Depression - to return to work. As the United States' industrial strength burgeoned, so did its economy. Furthermore, America's geographic isolation ensured that it would not suffer the fate of many of its contemporary allies such as the Soviet Union and Great Britain.