Cover the ground with this revolutionary part of the Bucareli Treaty (4)
I believe the answer is:
tile
'cover the ground' is the definition.
'tile' can be an answer for 'cover' (tiling is a kind of covering). I'm unsure of the 'the ground' bit.
'this revolutionary part of the bucareli treaty' is the wordplay.
'this revolutionary' says the letters should be written backwards.
'part of' says the answer is hidden in the clue.
'elit' can be found hidden inside 'bucareli treaty'.
'elit' backwards is 'TILE'.
'with' acts as a link.
Can you help me to learn more?
(Other definitions for tile that I've seen before include "Thin slab of fired clay" , "Thin slab of ceramic or slate" , "Glazed piece of earthenware as for lining walls" , "Flat piece of ceramic" , "Piece on roof" .)