What land feature stood as a barrier between the thirteen colonies and the Ohio River valley

The Appalachian Mountains lay west of the thirteen colonies. It formed a natural barrier between the colonies and all land to the west

the story goes that because of this belief, constantine was able to defeat his foes. constantine became an ardent1 christian. christianity and other religions were tolerated under constantine's rule. constantine also was responsible for the building of a great cathedral in rome.

the answers are excess supply, and fall

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