Release That Witch
Cheng Yan travels through time, only to end up becoming an honorable prince in the Middle Ages of Europe. Yet this world was not quite as simple as he thought. Witches with magical powers abound, and fearsome wars between churches and kingdoms rage throughout the land. Roland, a prince regarded as hopeless by his own father and assigned to the worst fief, spends his time developing a poor and backward town into a strong and modern city, while fighting against his siblings for the throne and absolute control over the kingdom. Join Roland as he befriends and allies with witches and, through fighting and even farming, pushes back invaders from the realm of evil.
Invitation
Editor: Meh
This was not a wild guess, but it could be best proved by the development of human civilization.
It took mankind nearly a million years to enter the Iron Age from the Stone Age, but only 3,200 years from the Iron Age to the Age of Steam. From the Age of Steam to the Electric Age, it merely took 150 years, and the world directly stepped into the information era in another 50 years.