Why might women have received the vote in the western states before state legislatures were willing to pass voting rights for women in the east and the south? with contemporary quotation?

Due to the western states being more civilized. Also, as there are fewer women in the west, I feel that the women were not a threat due to the lack in number of votes from women. Also, women in the west were required to do more work than women in the east in terms of around the household etc. "Susan Anthony said that western men were more chivalrous than their eastern brethren".