Answer:
hello my name is alyssa I will give you my answer in a another way but just introducing myself
The impetus to establish the United Nations stemmed in large part from the inability of its predecessor, the League of Nations, to prevent the outbreak of the Second World War. ... After nearly four years of planning, the international community finally established the United Nations in the spring of 1945.
The correct answer is Gettysburg.
Prior to the Battle of Gettysburg, Lee's Army of Northern Virginia was on a roll and had the idea that if they took the war to the North, it might test the resolve of the Northern people and force a peace.
Lee lost the battle though and turned tail. The Southern Army never made it above the Mason Dixon Line again
