What events led up to world war1

The events that led up to world war I were, the assination of Austria-Hungary’s Arch-Duke & the imperialism of Germany

The immediate cause of World War I that made the aforementioned items come into play (alliances, imperialism, militarism, nationalism) was theassassination of Archduke Franz Ferdinand of Austria-Hungary. In June 1914, a Serbian-nationalist terrorist group called the Black Hand sent groups to assassinate the Archduke.