There was a decline in public support for the idea of "woman's sphere", the belief that a woman's place was in the home and that she should not be involved in politics. Laws that had allowed husbands to control their wives' activities had been significantly revised. There was a dramatic growth in all-female social reform organizations, such as the Woman's Christian Temperance Union (WCTU), the largest women's organization in the country. In a major boost for the suffrage movement, the WCTU endorsed women's suffrage in the late 1870s on the grounds that women needed the vote to protect their families from alcohol and other vices.