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According to your text, systems of government in the united states are shifting from what to what?

Which struggle to place between colonist and soldiers in boston on march 5, 1770

The controlled use of fire by hominids: (a) limited the expansion of hominids into certain environments, such as dry grasslands. (b) decreased the amount of food energy available in the hominid diet. (c) contributed to geographical expansion and food production techniques in positive ways. (d) has been shown to contribute little to the digestive process of hominids.