What gains did union forces make in the western part of the confederacy in the first years of war?

1862, was the first significant Union victory of the American Civil War (1861-65). In an effort to gain control of rivers and supply lines west of the Appalachians, the bulk of his troops to nearby Fort Donelson before surrendering to Union forces. off Confederate access to two key waterways for the remainder of the war.

the answer is b. osage.

b, public works good luck