This is the stem.

Appomattox courthouse and Battle of Gettysburg

Options:
Three-day battle that resulted in the defeat of Lee's army.
Location where confederacy surrendered to the union; ended the civil war.
grant offered generous terms of surrender.
turning points of the civil war ended any further advancement of the confederacy.

Three-day battle that resulted in the defeat of Lee's army.

Location where confederacy surrendered to the union; ended the civil war.
Grant offered generous terms of surrender.
Turning points of the civil war ended any further advancement of the confederacy.

Correct option: Location where confederacy surrendered to the union; ended the civil war.