Why it took so long for women to gain suffrage in the United States-How were they finally able to get the vote?

women’s voting right

Consider the struggle for the right to vote for women through the documentary films above, and why it took so long for women to gain suffrage in the United States? How were they finally able to get the vote? What other rights were denied to women? What was the reasoning behind the anti-suffrage views?
Finally, which groups continued to fight for their right to vote after women?
have at least 4 other sources ( 2 of which must be academic) to back up your analysis.

https://www.pbs.org/wgbh/americanexperience/films/vote/#part01