Answer:
Spirituals
Explanation:
I don't know the second answer... I'm so sorry.
It gave other races the knowledge to know what is right and what is wrong. It was a defining moment in interracial empowerment. It gave the minorities a chance to fight for their freedom.
I believe the answer is Barbed Wire.
Befor the inventions of barbed wire, the Cattles are let to roam freely across the plains and the owners are required to pay a lot of cowboys to supervise them so they didn't go missing. Witht he invention of barbed wire, they can keep the cattle in a secure place without supervision.