What significant outcome resulted from the 19th Amendment?

The significant outcome of the 19th Amendment was that women gained the right to vote. Ratified in 1920, the 19th Amendment marked a pivotal moment in the women's suffrage movement, allowing women to participate in the electoral process and influence political decisions. This amendment was the culmination of decades of activism and advocacy by suffragists who fought for equal voting rights, emphasizing that civic participation is essential in a democratic society. The achievement of this amendment fundamentally changed the landscape of American politics by expanding the electorate and promoting gender equality in civic rights.

Other options relate to important historical developments but do not connect to the 19th Amendment specifically. The abolition of slavery occurred with the 13th Amendment, Prohibition was established by the 18th Amendment, and the establishment of income tax was associated with the 16th Amendment. Each of these amendments addressed different social issues, but the 19th Amendment's focus was specifically on securing voting rights for women.