How did Augusta Savage's collaboration impact the Harlem Renaissance?

In tim o’brien’s chapter good form what does the narrator say is the happening truth

Review questions what were the four stated goals of operation reinhard and how were these implemented? how did treblinka, sobibor, and belzec differ from other concentration camps built earlier? how did the nazi party maintain secrecy regarding the final solution? why was the madagascar plan not used? why were some individuals, including wwi veterans, to be spared the final solution?

By comparing part 1 and 2 of polar opposites what does it mean by polar opposites