How did jackie robinson’s career as a professional baseball player serve the cause of civil rights? a. it made many young african americans proud of their ethnic backgrounds. b. it publicly broke a professional barrier against race. c. it gave many young african americans a role model of their own. d. all of the above.

How did the mountains on the oregon trail influence the timing of pioneers’ travels? a.) the pioneers wanted to avoid times when there was snow in the mountains. the pioneers wanted to spend as much time as possible enjoying the mountain scenery. b.) the pioneers crossed the mountains in late fall when the trees were bare and the views were good. c.) the pioneers were rugged people who were not impacted by the terrain they crossed at any time.