I think assuming that to be distinct is rather assuming that other countries never fought under similar circumstances.I assume this wasn't mentioned by the Youtube commentator, since it's not among the eight choices, but what about morale? As the war progressed, both sides fought with ferocious determination. In the combatants' attachment to incompatible ultimate values, the struggle had the characteristics of a religious war. Any room for compromise quickly disappeared. Neither side was willing to yield its perceived "inheritance" from the Founders under any circumstances short of total defeat.