I got the first one but I don't understand the rest

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

Which piece of legislation signed by lyndon johnson brought an end to barriers preventing minorities from participating in elections?

Review of module 5 history dba history