The East, to the West (4)
I believe the answer is:
asia
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">the east</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >'<span class="explanation-format__original">to the west</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ ></span>
(Other definitions for asia that I've seen before include "Huge landmass" , "Stretch of land" , "A great deal of land" , "A vast number of people have lived here" , "Major land mass" .)