The most common and most likely answer to this crossword clue is the 4 letter word ASIA which also is the latest solution we found used in USA Today in 2015.
It covers about 172 million square miles crossword clue answers
Here's a list of possible crossword answers ranked by the most likely to least likely.
| Answer | Likelyness | Letters | 
|---|---|---|
| ASIA | 100 % | 4 | 
Words with a meaning similar to the clue: It covers about 172 million square miles
These words may or may not be a possible solution to this crosswords clue.- asia
 - gadsden purchase
 - sun
 - port royal
 - thun
 - ordovician
 - hydrosphere
 - trafford
 - bar
 - var
 - air
 - order
 
Crossword Answer definitions
More crossword clues leading to the same solutions
Here's a few more crossword clues - all leading to the identical solution