The purpose of a timeline is to list major events according to what happened first, next, then last. I have given you the main idea please finish the paragraph yourself.
Answer:
Because the troops there were running out of supplies
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<span>Social and political unrest led to civil wars in Rome primarily because the political situation was controlled by the wealthy and thus, powerful families. Although in reality, the farmers were the ones who supported the empire through their produce. They were left unable to rival wealthy land owners. Furthermore, the poor were being abused by those in power through slave labor.
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China's first imperial dynasty was the Qin dynasty. The Qin unified the Chinese Warring States by conquest, however their empire ended up becoming unstable, after the death of the first emperor Qin Shi Huang.