Answer:
The Silk Road was a vast trade network connecting Eurasia and North Africa via land and sea routes. The Silk Road earned its name from Chinese silk, a highly valued commodity that merchants transported along these trade networks. Advances in technology and increased political stability caused an increase in trade. But I Think I still don't have the answer
The answer would be C.
The Compromise of 1877, settled the intensely disputed 1876 presidential election. It resulted in the United States federal government pulling the last troops out of the South, and formally ending the Reconstruction Era.
They would punish them if they left.
Han in the Xiongnu were several of the battles from "133 BC to 89 AD". During the reign of the WU emperor where the Han Chinese won over the Xiongnu, before these battles the Xiongnu were a nomadic group that reigned in modern Mongolia.
During these battles political instability was generated, producing that the state of Xiongnu was divided in 2 parts and had crisis of successions, having massive revelations between its towns the Wusun, Wuhuan and Dingling.
In 60 BC Han China established the protectorate in the western regions beginning the decline of the Xiongnu reign.
I hope it helps you