<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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B. Laws can change social prejudice
It was mostly caused by religious differences.
I think it is the atomic age. I hope this helps! :D