The North miscalculated the costs and benefits of fighting because _______________________.  they concluded it was the only way to preserve the Union and end slavery. they believed the South would not risk the destruction of their economy just to preserve slavery. they believed the South lacked the military resources to defend themselves from a northern invasion. they believed a negotiated settlement would only postpone the inevitability of a civil war.

The North miscalculated the costs and benefits of fighting because _______________________. 

they concluded it was the only way to preserve the Union and end slavery.

they believed the South would not risk the destruction of their economy just to preserve slavery.

they believed the South lacked the military resources to defend themselves from a northern invasion.

they believed a negotiated settlement would only postpone the inevitability of a civil war.