What significant achievement did the 19th Amendment bring about?

The significant achievement of the 19th Amendment was that it granted women the right to vote. Ratified in 1920, this amendment marked a pivotal moment in American history, as it enfranchised women and affirmed their role in the democratic process. The struggle for women's suffrage had been ongoing for decades, involving activism, protests, and a dedicated movement advocating for gender equality in voting rights. The passage of the 19th Amendment symbolized a major victory for these efforts and contributed to broader social changes, empowering women to participate fully in civic duties and influence public policies.

Other options reference important historical milestones but do not pertain to the 19th Amendment: ending slavery in the U.S. relates to the 13th Amendment, free speech is protected under the 1st Amendment, and the direct election of senators refers to the 17th Amendment. Each of these is significant in its own right, but they do not connect to the context of women's voting rights.