Is it ensure, insure, or assure?
A participant in the women's movement to win voting rights in the United States. The fight for women's suffrage was organized in the middle of the nineteenth century. Wyoming, while not yet a state, granted women's suffrage in 1869, though the struggle for universal suffrage was to last another fifty years. In 1920, the Nineteenth Amendment to the United States Constitution was ratified, guaranteeing that no state could deny the right to vote on the basis of sex.