Final answer:
The 17th Amendment to the United States Constitution provided for the direct election of US senators.
Step-by-step explanation:
The amendment that provided for the direct election of US senators is the 17th Amendment to the United States Constitution. Prior to the ratification of this amendment in 1913, senators were chosen by state legislatures. The 17th Amendment changed this system and allowed for the direct election of senators by the people of each state.
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