What made Serbia hostile to Austria-Hungary?
give

The Reasons for the Hostility Between Austria-Hungary and Serbia During 1878 and 1914. ... The results of the first Balkan War in 1912 were another cause of hostility between the two countries

Explanation:

there are no options provided but you can choose among the following gender-neutral pronouns: zir, hir, eir, vis, tem, eir.

in the normal course of maintaining a pronoun-antecedent agreement, we could have used the words his or her but since we are also required to use gender-neutral language, we need to replace it with its equivalent gender-neutral pronoun.