One of the main reasons for the civil war was the differences with slaves about whether it was illegal or legal to have slaves. This could have been avoided if there was agreement on how slaves should be treated.
They wanted to stop communism. It was spreading and this was the start of us trying to prevent it.
First, they imported a LOT of food from other parts of the empire. Rome is now built on the remains of Roman food packaging material: broken up pottery. Romans mainly lived on what is know as the mediterranean triangle: Wheat, wine and olive oil. Bread made up 70 to 80% of most of the Romans diet. Three kinds of food that are pretty easy to transport over longer distances. There were huge imports of grain from north Africa and Egypt. Rome lived on that grain. Wine and olive oil came from almost everywhere.
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https://www.google.com/amp/s/amp.reddit.com/r/AskHistorians/comments/1z8xck/how_was_ancient_rome_able_to_support_a_population/
Smith is most associated with A. Capitalism.
I'm glad to help. Good luck!