Final answer:
The women's suffrage movement achieved its earliest victories in Wyoming, Colorado, Idaho, and Utah.
Step-by-step explanation:
The women's suffrage movement achieved its earliest victories in the United States in Wyoming and the western frontier states of Colorado, Idaho, and Utah. These states granted women the right to vote in state and local elections as early as the 1860s and 1870s. By 1900, they had already responded to women's movements and conceded to suffragists' demands, partly to attract more women to these male-dominated regions.