In mid-1863 the Union gained control of the entire length of Mississippi River. What strategic advantage did this give the Union?

Some historians believe that the Mississippi River's control was a key factor that decided the victor in the war.

Explanation:

Statistics say that as many as 26 battles were fought around that strategic place during the civil war and countless smaller conflicts. Control of the Mississippi River was one of the key factors in the Civil War. After the Union gained control of the Mississippi River, it gained a huge strategic advantage. In the first place, it divided the Confederation into two parts, and since the communication was flowing along that river, communication with the Confederation was disabled. With this move, the Union also economically weakened the Confederation since there was a huge flow of goods along the river to be disabled. Thus the Confederation was economically in disarray.

a.tensions between the colonial elites and the backcountry men of virginia.

i do believe its (d) it allowed the government to offer pioneers sixty acres of western land if they lived on it and made improvements to it.

explanation: signed into law in may 1862, the homestead act opened up settlement in the western united states, allowing any american, including freed slaves, to put in a claim for up to 160 free acres of federal land. by the end of the civil war, 15,000 homestead claims had been established, and more followed in the postwar years