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题库 / Prep2007E2-SC-10
The rise of the Incan empire rested not only on the Incas' military might and the ability of their rulers but also they imposed a highly organized economic and political system on many different ethnic groups and permitting them to retain many of their customs and often their own leaders.
they imposed a highly organized economic and political system on many different ethnic groups and permitting them
on their imposition of a highly organized economic and political system on many different ethnic groups, who were permitted
because of their imposition of a highly organized economic and political system on many different ethnic groups, who they permitted
on their imposing of a highly organized economic and political system on many different ethnic groups and they permitted them
imposing a highly organized economic and political system on many different ethnic groups, permitting them
Incan empire的崛起不仅依赖他的军事力量和统治者的能力，还依赖于他们对于不同ethnic groups施加高度集中的经济和政治体系，这些groups被允许retain many of their customs and often their own leaders. B的意思
D的话them肯定是这些groups但是they能指到rulers那里么？
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