Help
End Section Review
End Exam
Answer Edit Confirmation
课程
活动
资料
反馈
题目内容
In the eighteenth and nineteenth centuries, Native American nations were hardly______ entities: they waxed and waned, with some gaining power and others losing it.
学员14ghxb
学员15wceq
学员16utax
学员13dpvs
学员18noab