How do you make this sentence into plural What a map atlas has?

Here's how to make the sentence "What a map atlas has?" into plural:

What do map atlases have?

Here's the breakdown:

* "What" remains the same as it's a question word.

* "a" changes to "do" to make the question plural.

* "map atlas" becomes "map atlases" to indicate multiple atlases.

* "has" changes to "have" to agree with the plural subject "map atlases."