The Battle of Gettysburg was a significant turning point in the war, because it‑ F. led to an immediate surrender by General Lee at Vicksburg

G. opened an invasion route to Philadelphia and New York City

H. inflicted a major setback to General Lee's plan to win the war which caused the South to never invade
the North again

J. cut off supplies for Union troops west of the Mississippi River

In a must-win clash, Union forces halted the northern invasion of Robert E. Lee's Confederate Army. ... The Union's eventual victory in the Battle of Gettysburg would give the North a major morale boost and put a definitive end to Confederate General Robert E. Lee's bold plan to invade the North

world war i began in 1914, after the assassination of archduke franz ferdinand, and lasted until 1918. during the conflict, germany, austria-hungary, bulgaria and the ottoman empire (the central powers) fought against great britain, france, russia, italy, romania, japan and the united states (the allied powers). to new military technologies and the horrors of trench warfare, world war i saw unprecedented levels of carnage and destruction. by the time the war was over and the allied powers claimed victory, more than 16 million people—soldiers and civilians alike—were dead.

explanation:

the answer i chose to believe is 'harmony'