Despite general meade's victory at the battle of gettysburg, why did president lincoln appoint grant as the new general to lead the union army?

Because he has failed to destroy Lee's army

Explanation:

Despite Meade was leading his army into victory during the bloodiest battle of the Civil War, he was criticized  from President Abraham Lincoln because according to him he failed to destroy Lee’s battered army, which had escaped across the Potomac River. This could have been stopped, according to Lincoln.

britain's king george iii, however, refused to receive the petition, which, written we consider whom we must oppose in this contest, and if it continues, what may the fundamental grounds upon which americans were taking up arms had shifted. that king george refused to so much as receive the

when he becomes king