"Who would act otherwise?" I can't understand this sentence?

Im reading a book telling about old Chinese social order. It explains one principle make the Chinese accept social inequalities, then that sentence co

I'm reading a book telling about old Chinese social order. It explains one principle make the Chinese accept social inequalities, then that sentence comes out.

What does the sentence mean?? English...hard...I wanna cry...

or:I'm reading a book telling about old Chinese social order. It explains one principle make the Chinese accept social inequalities, then that sentence comes out.What does the sentence mean?? English...hard...I wanna cry...

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