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Did trade influence the rise of empires, or did empires influence the extent of trade?
Empires influence the extent of trade: more empires involved in trading, makes trade better. For example, the Roman Empire was built near sea trade, so ships from other countries could carry their goods to Rome to trade
Trade influenced the rise of empires: If there were already good trading systems, and there was a small civilization, they could gain a lot of resources from trade and develop into a big empire.