How common sense started the american revolution?

Which of these statements best describes the ambiguity in this excerpt

Political rights for women grew most rapidly on the western frontier primarily because (1) the settlers were influenced by native american indian societies (2) women greatly outnumbered men in the west (3) pioneer life often required men and women to share responsibilities equally (4) immigrants settling in the west brought ideals of gender equality from europe

What did nativists think about chinatowns in the late 1800s?