Answer: With the passing of the Nineteenth Amendment in 1920, American women gain the right to vote
Explanation:
The 19th amendment of the U.S. Constitution (Amendment XIX) forbids the states & the federal govt from refusing U.S. residents, depending on gender their right to vote. Initially added in 1878 to the Congress, a number of efforts to change the vote for women failed till passing the "House of Representatives" on 21st May 1919, and then the Senate on 4 June 1919. It was then sent for ratification to the States
The last of the 36 States to guarantee ratification was in Tennessee on 18 August 1920. The 19th amendment was ratified formally on 26 August 1920, marking the start of a decades-long campaign for women's rights both at national & state level.
