Answer:
"Back then, the source of food was heavily influenced by the climate and environment.
After a period of time, a group of hunters and gatherers will be forced to move an area because they have no source of food left
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Explanation:
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<span> In the last quarter of the 19th century, all four items were sources of energy. Kerosene was commonly used for lighting, electricity was beginning to replace gas lighting and steam was used to power boats, trains, and certain kinds of industrial machinery. Gasoline was the primary fuel of the automobile, or "horseless carriage," which appeared in the 1890's. Of these four, however, steam was introduce the earliest. The concept of the steam engine goes back to ancient times. However, the steam engine was really introduced as a common source of energy early in the 18th Century. So while kerosene, gasoline, and electricity as an energy source were all developments of the 19th century, Steam power is at least a century (and maybe more) older. </span>
One of the results of the Supreme Court ruling in Gibbons v. Ogden was that "The Court defined interstate commerce and declared federal law supreme over state l<span>aw," since it ruled that New York could not override the federal right to regulate commerce. </span>
I would say d to help support national parks
