Amendment XIX

The right of citizens of the United States to vote shall not be denied or abridged by the United States or by any State on account of sex.

Congress shall have power to enforce this article by appropriate legislation.

The 19th Amendment allowed the women to finally vote. 

This picture shows girls rallying for their right to vote in the women's suffrage movement. 

This picture takes a look at a rally ran by women after the Amendment was passed and women were allowed to vote.