 Nyorai mberi kweiyi ndima - Musi wa 28 June 1914, mugari wenhaka pachigaro choumambo cheAustria-Hungary, Archduke Franz Ferdinand nomudzimai wake Sophie vakapondwa, rakapfurwa riri pedyo nepedyo kubva pamugwagwa wakazara vanhu paakanga achishanyira Sarajevo, guta guru redunhu reBosnia neHerzegovina, rakagarwa neAustria-Hungary kubvira muna 1878 uye rakapindirwa zviri pamutemo kubvira muna 1908. Mupfuri wacho, Gavrilo Princip, wechiduku wechiBosnia Serb ari nhengo yeMlada Bosna sangano revaSerb, vaCroat nevaMuslim rakazvipira kusunungura Bosnia kubva mukutonga kweAustria-Hungary uye kubatanidza maSlav ose okuSouth, akasungwa pakarepo pamwe chete nevamwe vakawanda vaifungidzirwa. 