In 1865, Congress established the Freedman's Bureau to help black people adjust to freedom and to help protect their civil rights. Option C is correct.
The Freedmen's Bureau was an agency of the United States Department of War to "address such issues of provisions, clothing, and fuel, as he may deem needful for the immediate and temporary shelter and supply of destitute and suffering refugees and freedmen and their wives and children"
after poor agricultural practices and years of deeply plowing, but nothing growing, farmers have learned to take the weather, tools, and distribution into count. therefore bettering their crop production.