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Explanation:
Teotihuacan
The Teotihuacan Period: 200-900 CE – During this era the great city of Teotihuacan grew from a small village to a metropolis of enormous size and influence. Early on, Teotihuacan was a rival of another city called Cuicuilco but, when that community was destroyed by a volcano c.
I think the Articles had problems with Currency, Interstate Commerce, Foreign Trade, and Foreign Affairs.
Railroads brought crops and food to cities in the East, and settlers to farms in the Great Plains
I think its A.The U.S. economy was stronger than the economies of European countries. 3
