A state of the USA? OK, do that USA anagram! (5,6)
I believe the answer is:
south dakota
'a state of the usa? ok do that usa anagram' is the definition.
'South Dakota' can be an answer for 'a state' (South Dakota is an example). I'm not sure about the rest of the definition.
'ok do that usa anagram' is the wordplay.
'anagram' is an anagram indicator.
'ok'+'do'+'that'+'usa'='okdothatusa'
'okdothatusa' with letters rearranged gives 'SOUTH DAKOTA'.
Can you help me to learn more?
(Other definitions for south dakota that I've seen before include "part of the Louisiana purchase" , "northern state" , "US state, capital Pierre" .)