Sentence:  He is not one to remain more comfortably and unquestioningly within a body of social , cultural , or literary traditions than he was within the traditions - or possibly the regulations - governing his tenure in the post office at Oxford , <WSD>Mississippi</WSD> , thirty-five years ago . 
Meaning of the word marked with <WSD> tags:  a state in the Deep South on the gulf of Mexico; one of the Confederate States during the American Civil War