The battle of vicksburg was significant because

The Battle of Vicksburg was significant because it allowed the Confederates (southern states) to lose control of the Mississippi and Mississippi River, which was extremely important to the Confederators.

Explanation:

The Battle of Vicksburg took place from May 18 to July 4, 1863, during the American Session War. At the time, the Union army forced the Confederate army back on the Mississippi River. The violent battle ensured the union, control of the Mississippi and the Mississippi River, while the Confederate army was extremely weakened by severe casualties during the battle. Historians believe that it was from this moment on that the already tired and massacred Confederates became aware that they could not win the war of the Session.

i confess that there are several parts of this constitution which i do not at present approve, but i am not sure i shall never approve them: for having lived long, i have experienced many instances of being obliged by better information or fuller consideration, to change opinions even on important subjects, which i once thought right, but found to be otherwise. it is therefore that the older i grow, the more apt i am to doubt my own judgment, and to pay more respect to the judgment of others.