Which amendment allowed senators to be elected by the people, since previously senators were chosen by the state legislators of their own states? *

That is the Seventeenth Amendment.

Explanation:

For 125 years, American didn´t vote directly for Senators. State legislatures chose them. The 17th Amendment allowed the direct election of senators by citizens in the states. Senators are elected for periods of 6 years. The reform was passed in 1913.

d) the constitution rights of native americans and their right to self-government on reservations

i'm asking the same thing i asked this other cat all of