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The Sumerians obtained most of their wealth and success from trade.
wealth
They developed wealth by trade
They developed wealth by trade
They did not get wealth from fishing, but they got it from trade.
trade
Trade.
Trade
The wealth of Mali, a kingdom in West Africa, was the gold and salt trade.
US has great success in world trade because of its free trade policy and strict regulations against monopoly.
from trade
Wealth and Trade