CausesofAmericanCivilWar:Rootreason:ThedifferenteconomicsystembetweentheSouthandtheNorthAsweallknow,theeconomicsystemofthenorthwascapitalisteconomicsystem(资本主义经济制度),while,thesouthwasplantationeconomicsystem(种植园经济制度),whichmeantanunavoidablewar.1.Afterobtainingthewesternland,theNorthproposedtodeterminethenewstateastheFreeState.SouthernslaveholdersstrovehardtoexpandslaverytothewestandpromotedNewJerseyasaslavestates.WithAmericanterritorialexpansion,thefriction(矛盾)ofthenorthandthesouthbecamefragile.2.1854inthenorth,theRepublicanPartywasestablished.3.Inthesameyear,anarmedstruggleofthattheSouthernslaveholderswereagainstthewesternfarmersandimmigrantsfromtheFreeStatebreakoutinKansas.4.In1857slaveholdersattempttoexpandslaverytotheentireterritoryoftheUnitedStates.ThisledtotheJohnBrownuprising.ImportantReason:Thedebateoftheabolitionofslavery.HarrietBeecherStoweistheauthorofUncleTom’sCabinThestoryisdominatedbyasingletheme:theevilandimmoralityofslavery.ThisbookdepictedlifeforAfricanAmericansunderslavery.ItenergizedantislaveryforcesintheAmericanNorth,whileprovokingwidespreadangerintheSouth.TheSignificance:ThisnovelgaveafairlyaccuratepictureofsouthernplantationlifeandthemostimportantpointwasthatitwasconsideredtotouchofftheAmericanCivilWar.Thedirectcauseofwar:AbrahamLincolnwaselectedaspresident.1860,AbrahamLincolnwaselectedasAmericanpresident,Lincolnrepresentedinterestofthenortherncapitalists,sothiselectionannoyedthesouth.AfterDemocraticPartyfailedinelection,thesouthbegantopreparerebellionandfoundedtheConfederateStatesofAmerica(美利坚联盟国);theRepublicanParty(共和党),ledbyAbrahamLincoln,hadcampaignedagainsttherebellionandfoundedUnitedStatesofAmerica(美利坚合众国).