There are no artifacts known as the Elements of Harmony.

Those in power, stay in power.

On the cusp of industrial revolution, the Monarchy of Equestria, takes a much tighter grasp upon the country. Many are displeased, whereas many others take this as a good change.
Patriots join the Equestrian Guard to fight the enemies of their country, while at home, new rules and laws are instated. Not all take to this as well as the Regent might hope.

Some though, feel as though the only way out, is revolution.