Answer :
White landowners who could make those African Americans work for them
Answer:
White people.
Explanation:
After civil war, black people had problems to emancipate still. That's why this period is label as 'another form of slavey'. Because african-american from certain job. In that sense, white people were advantage of this situation, because they were able to hire these people.
Another form of gain was the Sharecropping.