Dee ihe na-aga n'ihu na paragraf a - E lere mmeri Serbia anya dị ka ihe na-agaghị ekwe omume, ma ọ dịkarịa ala site na ndị na-ekiri n'èzí, ma e jiri ya tụnyere ike nke Austria-Hungary. Agbanyeghị, o doro anya na Serbia akwadebewo nke ọma, na mgbe ọtụtụ agha na 1914<unk>1915 (Agha nke Cer, Agha nke Kolubara
), ọnwụ na iweghachite Belgrade, na mwakpo nke ndị Serbia na-arụ ọrụ nke ụfọdụ mpaghara Austria (na Syrmia na ọwụwa anyanwụ Bosnia), ndị agha Austria kwụsịrị. Na 5 Julaị 1914, ihe gbanwere ka agadi Eze Peter m hapụrụ ọrụ ya nye onye nketa Alexander, na-eme ya onye nnọchi ya.