International trade blocs began to emerge in the 1940s in order to address which problem?
A. Mistreatment of workers
B. Overreliance on imported goods
C. Environmental harm
D. High barriers to trade

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.