What city was the center of literary poduction in the third and second centuries b.c.e

There are several places that come to mind, can you give us more of a context as to what reference this has.

And of course if this is a homework question, you are free to tell us what or where you think it was and we can relate to it.

Understand in homework they are looking for the one answer your BOOK, says, not various discussions.

If you want a discussion of various cities, this is what you will get here.