There were two battles in the early part of the war - New Madrid and Island No.10 - which liberated the Upper Mississippi and brought temporary credibility to John Pope, before his humiliation at Second Bull Run.
The better-known campaign was by Grant and Sherman, ending in the capture of Vicksburg, which completed the liberation of the Mississippi, but this could not be described as the 'northern part of the river'.
Mississsippi
No unless its a kind of river just as Mississsippi River.
TExas
the gulf of mexico
Mississsippi river
fransico coronado explored the mississsippi river
Both keelboats and large stern-wheelers played a large role on the Mississsippi.
24 states are west of the Mississippi River if you include Alaska and Hawaii.
Battle of Vicksburg
fransico coronado explored the mississsippi river
The battle of Vicksburg.
the somme river