Jonas Salk was an important American medical researcher and virologist, who is mostly known for developing the first successful polio vaccine in 1955.
-Gvcci
I believe that the direct effect of the passage of the Seventeenth Amendment is that it improved representation of the people, because now they were able to directly choose Senators, which made the whole voting process a lot democratic.
The answer to your question is B. progressive tax
hope this helped. CX
-bunny
