Which of the following was not a preventative measure used to keep african Americans from voting 1. poll taxes
2. DNA test
3. morality tests
4. property ownership
literacy tests ​

When president johnson vetoed a law that would extend the freedmen’s bureau, congress reacted by supporting the veto and closing the freedmen’s bureau. writing a new law to show support for the black codes. overriding the veto and expanding the agency’s powers. drafting a law to prevent african americans from voting.