I believe it is the last option... "Its political system cannot be easily changed.
Serfs were mostly peasant farmers who provided labor in their masters land. Peasants would pay the lord by working for them in exchange to use their lords land to generate their own food. Serfs did not have money. they were basically slaves. They would work at least three times a week. The serf was bound to work in a single manor. The status of serf was passed down to their children.
The American revolution inspired the idea that a country should secede and gain independence if they believe that the ruler of the country is a malevolent tyrant. The Civil War inspired hte idea that the country needs to remain unified even if the people don't agree and that we can always find a way to keep it together. They are opposite and at the time when they were created they suited the needs of the people.
