Answer:
Jose de San Martin's most important achievement was leading the revolutions against Spanish Royalists in Argentina (1812), Chile (1818), and Peru...
Explanation:
The completion of the Transcontinental Railroad greatly affected companies that made products in that it made it far easier for them to transport their goods over long distances to markets, which greatly increased profits and output.
United States involvement in the Boxer Rebellion would have contradicted the ideals George Washington laid out in his farewell address. It also would have violated the Monroe Doctrine by becoming involved in Europe's subject matters.
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P.S thats also why people haven't answered but after you make that change you will get some answers. Have a great day! :)