The main river just west of the appalachian mountains that runs into the mississippi river:

Salutations!

The main river just west of the Appalachian mountains that runs into the Mississippi river:

The main river just west of the Appalachian mountains that runs into the Mississippi river: Ohio River. Ohio is the largest tributary by capacity. A tributary is smaller rivers joining into larger rivers.

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causes of world war 1

 Conflict between old imperialist countries (Eg: Britain and France) vs new imperialist countries (Eg: Germany).

  consequences

Unemployment and famine.