There are 4 Progressive Era Amendments: 16: Income tax amendment--requiring people to now pay a federal income tax. This was promoted by Populist ideology and the temperance movement.
17: Direct election of Senators--allows a direct vote by the people of a state to elect their Senators instead of being elected by State Legislatures. This was a Populist movement idea.
18: Prohibition of alcohol--the making, selling, and consumption of alcohol was prohibited under this law. It was promoted by the temperance movement.
19: Voting rights for women--this allowed women to vote in elections. It was promoted by the women's movement.
