This website is common in both north and south America.
Or is this better?
This website is common in both south and north America.
Let's ask Google:
"in north and south": 26,800,00 hits
"in south and north": 592,000 hits
Why there is a huge difference?
There are too many other examples, such as white and black, high and low, etc.
In an academic/professional writing context, if there is no logical reason for any order, should one just preserve the common order? Does using the uncommon order look strange?