Fort Union was established to protect the cimarron route of the Santa Fe trail due to incessant attacks from the Indians. The Indians used to attack the American travelers who passed through that route.
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The main system of moral beliefs formed the centre of Chinese thought and culture for them is Confucianism.
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Side-note: Buddhism and Taoism are two other faiths were permitted official recognition. (But Confucianism was the main one, especially in Qing Dynasty)
The answer is C. </span>Confucianism.
This might help! :-)
http://www.loc.gov/teachers/classroommaterials/connections/slavery/file.html
Why you give answer in question?
Answer:
Many served
famously they used to talk to each other in native American languages, languages the military of Germany could not understand, helping the allies
