To learn about the foods and the importance of papyrus I’m not sure about the third but maybe the clothes and it is not marriage customs I can say 100% and as well I don’t see a river so I don’t think it’s that either
The freedom of Bureau I think
DURING RECONSTRUCTION, African Americans had the right to vote! Yay! (B is incorrect.) Due to the sheer numbers of African American voters, African Americans often won political office throughout the South--a big change from before! A is correct!! Keep in mind that while African Americans were elected in the North, the question asks about African Americans in the SOUTH (C is incorrect). Also, minimum wage didn't exist in the United States at the time (D is incorrect).
Answer: A