Rosika Schwimmer (; 11 September 1877 – 3 August 1948) was a Hungarian-born pacifist, feminist, world federalist, and women's suffragist. A co-founder of the Campaign for World Government with Lola Maverick Lloyd, her radical vision of world peace led to the creation of the World Federalist Movement, the first such federalist organization of the 20th century. Sixty years after she first envisaged it, the movement she helped to create indeed took a leading role in the creation of the International Criminal Court, the first permanent international tribunal tasked with charging individuals with war crimes, crimes against humanity and genocide. Schwimmer was born into a Jewish family in Budapest in 1877, she graduated from public school in 1891. An accomplished linguist, she spoke or read eight languages. In her early career, she had difficulty finding a job that paid a living wage and was sensitized by that experience to women's employment issues. Gathering data to provide statistics on working women, Schwimmer came into contact with members of the international women's suffrage movement and by 1904 became involved in the struggle. She co-founded the first national women's labor umbrella organization in Hungary and the Hungarian Feminist Association. She also assisted in organizing the Seventh Conference of the International Woman Suffrage Alliance, hosted in Budapest in 1913. The following year, Schwimmer was hired as a press secretary of the International Woman Suffrage Alliance in London. When World War I broke out, she was branded an enemy alien and left Europe for the United States, where she spoke on suffrage and pacifism. She was one of the founders of the Woman's Peace Party and the organization which would become the Women's International League for Peace and Freedom. In 1915, after attending the International Congress of Women in The Hague, she worked with other feminists to persuade foreign ministers in Europe to support the creation of a body to peacefully mediate world affairs and was instrumental in convincing Henry Ford to charter the Peace Ship. From 1916 to 1918, Schwimmer lived in Europe working on various plans to end the war. With the establishment of the First Hungarian Republic, she was appointed as one of the world's first female ambassadors (from Hungary to Switzerland) in 1918. When the Republic was toppled by a coup d'état, she fled to the United States, renouncing her Hungarian citizenship. Applying for naturalization, Schwimmer was rejected on the basis of