Transnational feminism
In the "Oxford Handbook of Transnational Feminist Movements", Valentine Moghadam says that "women have worked together across borders since at least the mid-1800s. (55)" What is now called first wave feminism started in the early twentieth century in the West with a focus on women's suffrage. 
During World War II, the United States government gave women jobs because the war had caused a national shortage of labor. After the war ended, Irene Tinker says (oxford transnational), these jobs were taken away but women were no longer satisfied going back to their previous gender roles. Starting in the 1960s in the United States, second wave feminism emerged, defined by women's organization around "equal right to education, employment, and equal pay for equal work, and on sexual and reproductive rights."
Anne Koedt
Koedt was a founding member of the New York Radical Women, an early feminist group begun in fall, 1967 which pioneered women's liberation through activism, such as disrupting the 1968 Miss America pageant, writing and publishing feminist work, and connecting personal issues to political oppression in the form of small-group consciousness-raising. By late 1968, she also co-founded The Feminists, a strict feminist separatist group begun by Ti-Grace Atkinson after she left the New York City chapter of the National Organization for Women; other prominent members included Sheila Michaels, Barbara Mehrhof, Pamela Kearon, and Sheila Cronan. In 1969, Koedt left the Feminists to form the New York Radical Feminists (NYRF) with Shulamith Firestone. NYRF (not to be confused, as it often is, with the larger and older New York Radical Women, which was still meeting and whose membership was fluid and often overlapped with the smaller groups] was organized into small cells or "brigades" named after notable feminists of the past; Koedt and Firestone led the Stanton-Anthony Brigade. By 1970, conflicting factions within NYRF had driven both Koedt and Firestone out of the group they had founded and Koedt withdrew from organized activism, later commenting "I was done with groups after that."