Environmental impacts associated with the production and consumption of energy include global climate change, acid rain, hazardous air pollution, smog, radioactive waste, and habitat destruction. The nation's heavy reliance on fossil fuels (primarily imported petroleum) poses major concerns for energy security.
Back then government was possible when the people came and worked together. By having good leaders they could make stable groups called empires
Hope this helps might be a bit more then you wanted
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The president is in the executive branch i believe.
President Hoover responded cautiously to the Great Depression because he "A. thought that the business cycle would correct itself," mostly because it was impossible at that point to know the extent to which the depression would develop.
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general assembly and security council