Clue: Europe to show disapproval of amount of data needed for downloaded literature (1-4)
Answer: E-BOOK
Explanation: Europe to show disapproval of amount of data needed for downloaded literature (1-4)
A charade of E ('Europe'. This has come up before, including last week: the abbreviation is of European, not Europe) plus BOO ('show disapproval') plus K ('amount of data'). I suppose one might take an E-BOO as Europe showing disapproval.