49 BCE - 45 BCE
Babban Yakin basasar Romawa
Yaƙin basasa na Kaisar (49-45 KZ) yana ɗaya daga cikin rikice-rikicen siyasa da soja na ƙarshe na Jamhuriyar Roma kafin sake tsara shi zuwa cikin Daular Roma.Ya fara ne a matsayin jerin gwano na siyasa da na soja tsakanin Gaius Julius Kaisar da Gnaeus Pompeius Magnus.Kafin yakin, Kaisar ya jagoranci mamaye Gaul kusan shekaru goma.Ƙaddamar da tashin hankali da ya fara a ƙarshen 49 KZ, tare da Kaisar da Pompey sun ƙi komawa baya, duk da haka, zuwa barkewar yakin basasa.Daga ƙarshe, Pompey da abokansa sun jawo Majalisar Dattijai don neman Kaisar ya bar larduna da sojojinsa.Kaisar ya ƙi kuma a maimakon haka ya tafi Roma.Yaƙin ya kasance shekaru huɗu na gwagwarmayar siyasa da soja, an yi yaƙi aItaliya , Illyria, Girka ,Masar , Afirka, daHispania .Pompey ya ci Kaisar a shekara ta 48 KZ a yakin Dyrrhachium, amma shi kansa ya ci nasara a yakin Pharsalus.Yawancin tsoffin Pompeians, ciki har da Marcus Junius Brutus da Cicero, sun mika wuya bayan yakin, yayin da wasu, kamar Cato the Younger da Metellus Scipio suka yi yaƙi.Pompey ya gudu zuwa Masar, inda aka kashe shi lokacin da ya isa.Kaisar ya shiga cikin Afirka da Asiya Ƙarama kafin ya kai hari Arewacin Afirka, inda ya ci Scipio a 46 KZ a yakin Thapsus.Scipio da Cato sun kashe kansu jim kadan bayan haka.A shekara mai zuwa, Kaisar ya ci na ƙarshe na Pompeians a ƙarƙashin tsohon Labienus a yakin Munda.An mai da shi mai mulkin kama-karya perpetuo (mai mulkin kama-karya har abada ko kuma mai mulkin kama-karya na rayuwa) a shekara ta 44 KZ kuma, jim kaɗan bayan haka, aka kashe shi.