<prompt> Qedela umusho olandelayo: Ukunqotshwa kweSerbia kwakubhekwa njengokuseduze, okungenani ngababukeli bangaphandle, uma kuqhathaniswa namandla e - Austria - Hungary. Nokho, kusobala ukuthi iSerbia yayizilungiselele kahle, futhi ngemva kochungechunge lwezimpi ngo-1914 kuya ku-1915 i-Battle of Cer,  <response>: Impi yaseKolubara, ukulahleka nokubuyiselwa kweBelgrade, kanye nokuhlasela okuphikisayo kweSerbia ngokuhlala kwezinye izindawo zase-Austria eSirmia naseMpumalanga yeBosnia, ibutho lase-Austria lahlehla. NgoJulayi 5, 1914, izinto zashintsha njengoba iNkosi endala uPeter I yanikela ngemisebenzi yayo endlalifa ebonakalayo u-Alexander, imenza umbusi wayo. 