Which progressive era amendment gave women the right to vote?

The answer to your question is the 19th amendment. Here's some more info
Ratified on August 18, 1920, the 19th Amendment to the U.S. Constitution granted American women the right to vote—a right known as woman suffrage. At the time the U.S. was founded, its female citizens did not share all of the same rights as men, including the right to vote.

Woman's suffrage... that's all I can remember, hope it helps.