Which amendment granted women the right to vote?

The 19th Amendment, ratified in 1920, is crucial because it specifically granted women the legal right to vote in the United States. This amendment marked a significant victory for the women's suffrage movement, which fought tirelessly for decades to ensure that women would have equal voting rights. By affirming that the right to vote cannot be denied on the basis of sex, the 19th Amendment fundamentally altered the electoral landscape and expanded democracy in the country.

The other options relate to voting rights but do not pertain to women's suffrage. The 15th Amendment, for instance, focused on preventing the denial of voting rights based on race, while the 14th Amendment addressed citizenship and equal protection under the law. The 26th Amendment lowered the voting age to 18 but does not specifically address gender. This contextual understanding highlights the importance of the 19th Amendment as a pivotal moment in the history of voting rights in the United States.