There are no answer choices, but I know a Native American tribe that was <em>not</em> located in Mesoamerica was the Incas.
It would be Martin Cooper that contributed most directly to creation of the cell phone. <span>Cooper and his team at Motorola, the communications company, created maybe the only thing that runs the lives of business professionals and teenagers alike -- the cell phone.</span>
I would say this is a very interesting question lets discuss the benefits and drawbacks. Ok so he said a nation not united would fall. And it did during the american civil war. I would say being a strong nation you should encourage trade. For that making economic alliances is good. It boosts your economy and adds plenty of goods to. But they should be avoided if the country is divided like america was. Having the strongest economy is the key to being the strongest nation.
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Government regulation might be used to facilitate competition