What were the issues between the european nations that really led to war? (refering to wwi)

There were four main causes of World War I Militarism, alliances, imperialism and nationalism. The first world war was a result of these four main problems, but it was triggered by the assassination of the Austrian archduke Franz Ferdinand and his wife.

Do you have more info about it ? i doubt this is the answer because i don't have all the information but if trouble was brewing in a clinic maybe it was an argument as to which clinic was better or smth of that nature