prep2-145 关于one another 的困惑

nancy5130

prep2-145
The Kwakiutl recognized one social unit larger than the tribe---the confederacy,which was a cluster of loosely knit, informally related neighboring tribes who interacted with themselves more often than between other tribes.
A  tribes who interacted with themselves more often than between
B  tribes who interacted among each other more often than among
C  tribes who interacted with one another more often than with
D  tribes, interacting among each other more often than between
E  tribes, interacting among one another more often than with
答案是C,我的疑惑在于C中的one another
后面的prep解释中说tribes interacted with A more often than with B,其中A是themselves,B是other tribes.
句子要表达的意思是the confederacy 这个集合中的部落和这一集合内的部落交往密切，而和集合之外的部落不那么密切。
这里的one another 是指集合内的部落吗？
困惑，请指教！

melodyflying

这里的one another 是指集合内的部落吗？<-- yes, correct

lavenderwu

为什么 tribes who 不用 tribes which  OR  tribes that(单数)?

Ferris1992

我的问题是：“the confederacy informally related neighboring  tribes who interacted with one another more often than with other tribes。”里的related是confederacy的谓语动词么？句意看起来怪怪的……

Zingales

我对who有疑问。不是说只有人才能用who吗？为什么tribes也接who而不是that呀？

louisehu

prep2-145
The Kwakiutl recognized one social unit larger than the tribe---the confederacy,which was a cluster of loosely knit, informally related neighboring tribes who interacted with themselves more often than between other tribes.
A  tribes who interacted with themselves more often than between
B  tribes who interacted among each other more often than among
C  tribes who interacted with one another more often than with
D  tribes, interacting among each other more often than between
E  tribes, interacting among one another more often than with



这里related是修饰confederacy么，还是knit？