The post-war period was marked by substantial changes in gender roles in the developed world. The most important change was due to what then was called "women's liberation," a movement that pushed for complete equality of women in the workplace and private life. This was in part enabled by increasing sophistication and availability of contraception and abortion which gave women control over their child-bearing choices. It also enabled greater freedom for sexual relationships not tied to earlier forms of marriage and the nuclear family. Another major movement was the gay rights one which argued for decriminalization of homosexual relationships and gay marriage.