Which of the following best describes the provisions of the 1965 Voting Rights Act that authorized the federal government to register voters in states that discriminated against nonwhite citizens?
1) It allowed the federal government to oversee voter registration in states with a history of discrimination.
2) It required states to obtain federal approval before making changes to their voting laws.
3) It prohibited literacy tests and other discriminatory voting practices.
4) It established a formula to determine which states were subject to federal oversight.
