Answer:
The amendment that extended voting rights to women is the 19th Amendment.
Explanation:
The Nineteenth Amendment to the Constitution prohibits the right to vote to be denied to any citizen of the United States on the basis of gender. It was adopted on August 18, 1920, making the United States the fifth nation to introduce universal suffrage for women.
The amendment is the result of decades of struggle by the movement for women's suffrage, a movement that formed the basis of the first wave of feminism in the United States. Although the amendment represented a crucial step, women's suffrage was in fact gradually introduced into the United States, beginning in the 1880s. Prior to the amendment, the US Constitution did not explicitly deny women the right to vote, but the federal constitutions did.
