What people or tribes bordered the Xiongnu to the north and the south?North
-Turkic Tribes
South
-The Han
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Answer: B. by working together voluntarily
In 1883, railroad companies were able to standardize their timetables. One of the best practice that they did is that they work together voluntarily for the welfare of the majority. It is the unity that they were able to construct that made the standardization of their timetables.
