Calls for greater gender equality have been around for centuries from writers like Christine de Pizan and Mary Wollstonecraft. That said, it was not until the suffrage movement in the nineteenth century that significant steps towards gender equality occurred in the West. Married women were the first to win important property rights following various campaigns. Voting rights among propertied women came later. Many women entered the workforce for the first time during World War I, but it was after the cessation of World War II when many of the de facto rights women have won in wartime were put into law. These were championed in the newly formed United Nations, which included various conventions, for example, in rights to education.