Space.
Credit to @-Hibot- for Hiboticus and YouTube for the video with the music. A scenario based on the Simpluman Revolution, the Simpluman Empire's main state makes changes to the law. One of their states does not agree with this, while the rest are fine with it. Another completely agrees with the law changes and claims that the other state shouldn't be part of the country if it doesn't agree with the main state of the country. The disagreeing state declares war on the agreeing state, so the agreeing state takes more land from other states. The disagreeing state copies this until the country is split into two. A second war goes on between the two countries, boosting the attention of the Second Hiboticus War.