If<span> we look at the history of international relations in the Balkans in the ... got the right to </span>trade<span> in the Ottoman </span>Empire<span>, and </span>Russia<span> got the right to ... the </span>Russians would<span> switch </span>their<span> support to a </span>regional<span> rival, such as Bulgaria. ... British Balkan interests derived from interests in the Eastern </span>Mediterranean<span>.
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The only answer I found was: The ancient Chinese kings maintained control of their dynasties throguh military means.
You probably go to connections accademy. I do too.
This question is in the Journey Across Time text book on page 231. The answer is on pages 225 - 231.
Besides the two answers above me, I managed to find a reasonable answer:
"Rulers became powerful because they controlled land and had strong armies."
This is all I could find, hope this benefits others who wonder what the answer is!