, ▁in ▁ 2 0 0 3 ▁Steven ▁H ahn ▁published ▁the ▁Pul itzer ▁Prize - win ning ▁account , ▁A ▁Nation ▁under ▁Our ▁Fe et : ▁Black ▁Political ▁Str ugg les ▁in ▁the ▁R ural ▁South ▁from ▁S la very ▁to ▁the ▁Great ▁M igration , ▁which ▁exam ined ▁how ▁slaves ▁built ▁community ▁and ▁political ▁understanding ▁while ▁ens la ved , ▁so ▁they ▁quickly ▁began ▁to ▁form ▁new ▁associations ▁and ▁institutions ▁when ▁em an cip ated , ▁including ▁black ▁churches ▁separate ▁from ▁white ▁control . ▁In ▁ 2 0 1 0 , ▁Robert ▁E . ▁Wright ▁published ▁a ▁model ▁that ▁explains ▁why ▁sla very ▁was ▁more ▁pre val ent ▁in ▁some ▁areas ▁than ▁others ▁( e . g . ▁southern ▁than ▁northern ▁Del aware ) ▁and ▁why ▁some ▁fir ms ▁( ind ividual s , ▁corpor ations , ▁plant ation ▁own ers ) ▁chose ▁slave ▁labor ▁while ▁others ▁used ▁w age , ▁indent ured , ▁or ▁family ▁labor ▁instead . ▁ ▁Civil ▁War ▁ ▁The ▁Civil ▁War ▁has ▁generated ▁an ▁unus ually ▁large ▁histor i ography . ▁In ▁terms ▁of ▁controvers y , ▁histor ians ▁have ▁long ▁deb ated ▁the ▁causes ▁of ▁the ▁war , ▁and ▁the ▁relative ▁importance ▁given ▁to ▁national ism ▁and ▁section al ism , ▁sla very , ▁and ▁economic ▁issues . ▁National ism ▁domin ated ▁histor i ography ▁from ▁the ▁late ▁ 1 9 th ▁century ▁and ▁the ▁ 1 9 2 0 s , ▁especially ▁as ▁reflected ▁in ▁the ▁work ▁of ▁James ▁Ford ▁Rh odes . ▁