Remember how nothing was the same after the Industrial Revolution? The world was truly a different place? Well, that took place over 100+ years. The Great War (WWI) will do all of that in 5 years. This is such a major conflict involving so many moving parts. If you’re a history nerd like, me this one is so much fun. WARNING: This is AP World, not AP World War. Don’t get bogged down here. I know… it’s archdukes and drive-bys and ultimatums and Schileffens….I know… But, don’t linger here. Know the order of how things went down here. Know how the heir to the Austro-Hungarian Empire’s assassination brought the world to war. Then, off to the war itself in the next section.