Using 150 years of women's history, this book details how women have organized into global movements which have shaped and challenged how international organizations consider gender. It argues that traditional ways of analyzing international relations have ignored women's contributions because their tools are gender exclusive. After developing a gender analysis, this book brings to light many contributions from women's movements especially related to the League of Nations and United Nations, and puts these in the context of changes in the global political economy. It includes an extensive chronology of international women's organizations, their organizing date and consultative status at the United Nations.