Frederick Jackson Turner and the frontier. A year after the Oklahoma Land Rush, the director of the U.S. Census Bureau announced that the frontier was closed. The 1890 census had shown that a frontier line, a point beyond which the population density was less than two persons per square mile, no longer existed.
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If im not mistaken I think it is Mount Denali in Alaska,and Death Valley in California. Hope this helps.
For the first question, the correct answer among all the other choices is C. It introduced the patriarchal society to ancient civilizations.
For the second question, the correct answer among all the other choices is A. The Ten Cimmandments.
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The president gets his/her power from Congress.