Why Did World War 1 Start

The event that sparked the outbreak of World War I is the simple but complex assassination of Archduke Franz Ferdinand. The archduke’s wife was also killed with him on that day in 1914. One might wonder how a Serbian nationalist from Sarajevo, Bosnia known as Princip was even able to get his hands on archduke. Ferdinand and his wife were celebrating their anniversary and they decided to tour the city of Sarajevo,the capital of Bosnia. While visiting they were in an open care with little security for their protection, and they made one of many other turns too wrong which was where Princip was loitering. When he saw the archduke and his wife he started firing shots at the car and unfortunately bullets hit him and his wife, but they died one hour later after being taken to a nearby health hospital. This incident helped push forward the start of World War I but Austria- Hungary also declared war on Serbia and the war finally begun.
World War I consisted of four different M.A.I.N reasons why ww1 started. These causes are Militarism, Alliances, Imperialism, and
Countries saw other countries with advanced technology which caused competition within the weapons they had. Even though archduke was assassinated because of nationalism I feel like it still wouldn’t have had much of a bigger effect like the alliances did. Imperialism is another one that started it, and it created problems between Britain and france with Germany because Britain and France owned lots of land. They still wouldn’t have had other people join the war if the alliances were never made. It would just be that one country and another country at war instead of another country's allies behind brought into the war regardless of if they did anything. Alliances overall had a better contribution towards starting World War