Hey, what are the questions?
During the Second Industrial Revolution, the labor movement in the United States grew out of the need to protect the common interest of workers. These labor unions fought for better wages, reasonable hours and safer working conditions as during that time, the working conditions in factories, mills, and mines were terrible. So workers joined together and created unions in order to fight for their safety and better and increased wages.
What are the achievements?
Ghana, Mali and Songhai adopted Islam as the result of cultural diffusion. Due to the cultural diffusion, the religion of Islam spread in Africa pretty fast and easily. The diversity was not hampered, but it remained. This helped in the trading side of the countries in Africa as well. I hope the answer helped you.