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

the answer is a. laws were enacted in the aftermath of the plot to make it harder to free slaves,increasing sectionalism

b. the passage of the equal rights amendment  

explanation:

this mean that anything that someone else could do they could do