A, Japanese military leaders believed capturing territory could improve Japan's economy.
Answer: It is a play on the words “The Greatest Show on Earth,” suggesting that the snowfall is so spectacular it is like a performance.
It is likely that this phrase is intended as a reference to the phrase "the greatest show on Earth." The effect of comparing the snow to a show is to imply that the snowfall is as spectacular as a good performance, or that it should be appreciated in the same way.
