Why was the mississippi river important to americans who moved west after the revolution ?

After the American Revolution, a flood of people crossed the mountains into the fertile lands between the Appalachians and the Mississippi River.

- Encyclopedia Britanica

because of its location and commercial importance, atlanta was used as a center for military operations and as a supply route by the confederate army during the civil war. therefore, it also became a target for the union army. general william tecumseh sherman and his troops captured the city in 1864.