The united states where worried that japan would give military support to the european countrys
Because there were too many Chinese come to america for build railroad and want to be american citizen
The History of the Standard Oil Company<span> is a 1904 book by journalist</span>Ida Tarbell<span>. It is an exposé about the Standard Oil Company, run at the time by oil tycoon John D. Rockefeller, the richest figure in American history.
d.</span><span>19th century objective historiography
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The main reason was the South wanted to preserve slavery. The North wanted to abolish it. If you want some other reasons than slavery, let me know, and I will do my best to add more to this answer.
