Supreme power (11)
(Other definitions for sovereignty that I've seen before include "Pre-eminence" , "it rules!" , "Self-government" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">supreme power</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for empire that I've seen before include "Number of countries ruled by one" , "Group of states under the control one authority" , "Multinational" , "Great power" , "Huge domain or group of companies" .)