Answer:
The American Indians had to give up their way of life.
Explanation:
As Americans began to move west and set up the Transcontinental Railroad, they kept encountering American Indians. Due to the nature of the railroads, the American Indians had to give up their land for civilization's expansion and for the railroads to be constructed. Also, the amount of buffalos drastically declined causing American Indians to lose a lot of their food supply.
1.discovery of iron
2.the use of iron weapons
The Qing dynasty, officially the Great Qing, was the last imperial dynasty of China. It was established in 1636, and ruled China proper from 1644 to 1912. It was preceded by the Ming dynasty and succeeded by the Republic of China.
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