Answer by taking a quote from the following article:

Women in Israel are women who live in or who are from the State of Israel, established in 1948. Israel does not have a constitution, but the Israeli Declaration of Independence states: "The State of Israel (...) will ensure complete equality of social and political rights to all its inhabitants irrespective of religion, race or sex." Israeli law prohibits discrimination based on gender in employment and wages, and provides for class action suits; nonetheless, there are complaints of significant wage disparities between men and women. In 2012, Israel ranked eleventh out of 59 developed nations for participation of women in the workplace.

Even before the state of Israel was created, there were women fighting for women's rights in the land that became the state of Israel, for example women in the New Yishuv. Yishuv is the term referring to the body of Jewish residents in Palestine before the establishment of the state of Israel, and New Yishuv refers to those who began building homes outside the Old City walls of Jerusalem in the 1860s. In 1919 the first nationwide women's party in the New Yishuv (the Union of Hebrew Women for Equal Rights in Eretz Israel) was created, and Rosa Welt-Straus, who had immigrated there that year, was appointed its leader, as which she continued until her death. In 1926 the haredim, who preferred not to face the possibility of a plebiscite, left the yishuv's Assembly of Representatives, and that year an official declaration was made (ratified by the mandate government in 1927) confirming "equal rights to women in all aspects of life in the yishuv - civil, political, and economic."  Israel was the third country in the world to be led by a female prime minister, Golda Meir, and in 2010, women's parliamentary representation in Israel was 18 percent, which is above the Arab world's average of 6 percent and equals that of the U.S. Congress. Still, it trails far behind the Scandinavian countries' 40 percent average  The Israeli parliament, The Knesset, has established "The Committee on the Status of Women," to address women's rights. The stated objectives of this committee are to prevent discrimination, combat violence against women, and promote equality in politics, lifecycle events and education. In 1998, the Knesset passed a law for "Prevention of Sexual Harassment".  In 2013, the Minister of Religious Affairs and Chief Rabbis issued statements telling ritual bath attendants only to inspect women who want inspection, putting an end to forced inspections of women at mikvehs.

Who was the leader of the party?
Rosa Welt-Straus, who had immigrated there that year, was appointed its leader,