Causes of WWI
The five main causes that started the "Great War"
Archduke Franz Ferdinand
The thing that kicked this whole war off was the assassination of the French general/second in command, Archduke Ferdinand. This angered the French who angered other countries which eventually made everyone turn on each other.
Imperialism was a big factor in this war because every country was wanting to expand their country and wanting to be a more powerful nation.
The final reason for the Great War was all the different alliances. Everyone was in alliance with someone who was in alliances with someone else who was someone else's enemy which made everyone very confused. Once a country attacked another country, all of that countries allies would come together and fight on their side which made other countries fight on the other side, which was very difficult and hard for everyone to comprehend.