How did Lincoln’s ability to unify the bitterly divided North affect the outcome of the Civil War?

It made no difference.

It helped the Union win.

It gave the South an advantage.

It made Unionists angry.

It helped the Union win. Lincoln's ability to unify the North played a crucial role in the outcome of the Civil War by rallying support for the Union cause, maintaining morale among soldiers and civilians, and ensuring that the North remained united in fighting against the Confederacy.