The struggle for woman suffrage began in the colonial era. Abigail Adams urged her husband John to "remember the ladies" prior to the writing of the Declaration of Independence. As the country expanded westward, women worked alongside men. The 1848 Seneca Falls Convention produced the "Declaration of Sentiments and Resolutions," a document modeled on the Declaration of Independence and calling for women to be granted the same civil and political rights as those of American men. As abolition became a political issue in the mid-nineteenth century, many women joined the abolitionist movement. Upon the ratification of the Civil War Amendments, women anticipated that gender would no longer prevent their casting ballots in national elections. However, passage of a woman suffrage amendment was delayed until after World War I, during which women's work to support the war effort was greatly admired. Finally, in 1920, ratification of the 19th Amendment granted women the right to vote.