The policy that government should interfere as little as possible, and have free businesses
Code talkers transmitted messages over military telephone or radio communications nets using formally or informally developed codes built upon their native languages. The code talkers improved the speed of encryption and decryption of communications in front line operations during World War II
Explanation:
After the United States Civil War, state governments that had been part of the Confederacy tried to limit the voting rights of black citizens and prevent contact between black and white citizens in public places.
They are farming FRESH WATER algae so I would say Seaweed
Sea can grow in Fresh water