The correct answer for the question that is being presented above is this one: "B. building of the transcontinental railroad --> disappearance of the frontier." The pair of events that did the first event most directly influence the second is the building of the transcontinental railroad --> disappearance of the frontier.
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The demand in Europe for commodities such as tobacco and sugar.
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In the 1800's, photography were important for memories of the people lost in the war, and to have a something to reminisce for good times.
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Answer:
Việt Nam đứng thứ 73 trong bảng xếp hạng Chỉ số Thịnh vượng chung.
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