Which of the following were NOT used to prevent African American men from voting after the passage of the 15th Amendment? 1. Poll taxes
2. “Good character” tests
3. Literacy tests
4. Affidavit of Citizenship

Which of these is an example of physical systems impacting the environment? a flood causes erosion and loss of shoreline. people fill a lake before building houses near it. an earthquake causes a building to fall. a native tribe considers a volcano to be sacred.