Answer:
They thought the south was turning to its old ways
<span>They started because the Persian Empire expanded into Ionia where there were several Greek colonies. The colonists sent back to Greece for help. The Athenians sent a few ships to help the colonists, but the cities were taken any way. To put the mainland Greeks in their place, the Persians sent a small force to punish the Greeks. So begins the battle of Marathon. </span>
Southern slaveholders did not want the Congress to take the power over, so slave trade while controlling foreign affairs. So they only let the Congress have power over trade, excluding slave trade, for next twenty years.
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.