How are labor unions an example of “there is power in numbers as long as the numbers are united”?

How did the 16th 19th and 26th amendment to change the relationship between state governments in the federal government

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 two sets of political ideas speed as a result of the worldwide depression of the 1930s