what was the main causw of world awar 1 millitarism or alliances please please explain will mark brainliest and follow too

First of all there was many causes that acted as a chain

But the immediate cause of World War I that made all the items come into play (alliances,

imperialism, militarism, nationalism) was the assassination of Archduke Franz Ferdinand of Austria-Hungary by the Serbian nationalist Gavrilo Princip

yes they have. but is this a true false question? if it is, the answer is true.

panamal canal treaty and iran hostage crisis hope this