Controlling the Mississippi River from Minnesota to the Gulf of Mexico would cut the Confederacy in two. It would prevent the South from using the biggest river in North America. It would allow the North to get supplies to and from Northern states that would take too long to get using the Great Lakes, and the Erie Canal in New York, from Buffalo to Albany, that is frozen in the winter.
I assume you are talking about the Civil War. First, it was a whole lot less expensive to ship Northern products down the Mississippi River, to the port of New Orleans than to ship them over the mountains to ports on the east coast. Unless the Union forces could rule the Mississippi River, they would not have the support of the people. Controlling the Mississippi River Valley kept midwesterners wanting the Union to win.
The Mississippi River was important because if captured, it would divide the South making it weaker.
it would give the Union control of the Mississippi river
it would give the Union control of the Mississippi river
it would give the Union control of the Mississippi river
it would give the Union control of the Mississippi river
During the American Civil War, controlling the Mississippi River was an important part of the overall Union strategy for two reasons. It would, first of all, cut the South in two and thereby weaken it militarily and otherwise. Second, it would open up the Deep South to invasion by Union land forces.
The Union could have successfully blockaded all the ports the Confederacy needed to ship supplies and troops in and out.
They would stop trade and imported goods from traveling on the Mississippi river.
it would give the Union control of the Mississippi river
it would give the Union control of the Mississippi river
it would give the Union control of the Mississippi river