The only major northern victory during the early stages of the war came during the battle of

Battle of Shiloh

Explanation:

The Battle of Shiloh took place in April 6-7, 1862 in Southwestern Tennessee. This battle was extremely costly. It led to the defeat of the Confederate Army, and a Northern victory. Nevertheless, the war led to more deaths on the Union side than on the Confederate side, as well as a loss in reputation on the part of Ulysses S. Grant. At the time, it was also the most costly battle, as well as the battle with the highest number of casualties.

abraham lincoln  (february 12, 1809  – april 15, 1865) was an american statesman, politician, and lawyer who served as the 16th  president of the united states  from 1861 until  his assassination  in april 1865. lincoln led the nation through the  american civil war, its bloodiest war and its greatest moral, constitutional, and political crisis.[2][3]  he preserved the  union,  abolished slavery, strengthened the  federal government, and modernized  the u.s. economy.

an economic reason that the south needed a reconstruction plan is that plantations, factories, and other businesses were destroyed during the war.