My first guess would be that it is an independent clause. This is just a single statement.
The girl's went out to find what had happen to the other girls' rabbit.
Answer: In modern systems, a successful State is a territorial unit. As a territorial unit, its sovereignty extends over all the individuals and other things within its given territory. "A State is sovereign or the supreme power, within its territory and that state sovereignty extends to all the individuals in a given territory." by Dunleavy and O'leary.
Explanation: Some successful states were separately constituted with their own laws and institutions but dependent, such as Southern Netherlands and various states in Italy and around the Baltic. Gustavus had been a keen student of both the ancient discourses on military tactics, and how/why they were used. He incorporated many of these neo-classic “innovations” into his army. Gustavus’ army thus became more linear, more flexible and more maneuverable.
