During the civil war, grant’s capture of fort henry and fort donelson contributed to union control of kentucky and tennessee. kentucky and missouri. the ohio river. the mississippi river.

During the Civil War, Grant's capture of Fort Henry and Fort Donelson contributed to Union control of Kentucky and Tennessee. When Fort Lee was surrendered, this opened up traffic south to the Alabama border for the Union, although Fort Lee was in Tennessee. The Battle of Fort Donelson was fought near the Tennessee-Kentucky Border and opened up the Cumberland River which was important for invading the south.

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