How did the suffrage movement change in the twentieth century?

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In the early twentieth century, the suffrage movement shifted its focus back to winning a constitutional amendment to secure women's right to vote. This shift was necessary because state-by-state efforts had stalled and it was clear that a national amendment was needed. The movement embraced new, more aggressive tactics and strategies that eventually led to the passage of the 19th Amendment in 1920.

How Did the Suffrage Movement Change in the Twentieth Century