I have the answer "unzip" to the clue Quickly open a foreign spirit but I'm not sure why that is correct. (I got the answer from here). - un = a in foreign, so is zip a spirit?
For the rest of the clues that I got myself I don't understand some of the reasons as to why they are correct.
eg Country held back by railway bilionaire is Libya. I think the 'lib' part is bil backwards but not sure where 'ya' and the railway part fit in.
Also I have 'incapacity' for Legal preclusion enclosed by maximum space. 'capacity' = maximum space but not sure about the rest.