
Given the following passage

"Federalism, and other forms of territorially autonomy, is generally seen as a useful way to structure political systems in order prevent violence among different groups with countries because it allows certain groups to legislate at the subnational level. Some scholars have suggested, however, that federalism can divide countries and result in state collapse because it creates proto-states. Still others have shown that federalism is only divisive when it lacks mechanisms tthat encourage political parties to compete across regional boundaries.",

answer the following question. Note that the answer is present within the text.

Question: If something is opposite of pointless or not needed, it is what? 

useful
