The source of Prussia was not tribes, nobility, or regions, but the Teutonic Knights. It was a feudal military organization of a religious nature. At that time, the Church of Rome called for the conquest and transformation of paganism to the east

The source of Prussia was not tribes, nobility, or regions, but the Teutonic Knights. It was a feudal military organization of a religious nature. At that time, the Church of Rome called eastward to conquer and transform the pagans. Thus came the mighty Crusades, and the Teutonic Knights came into being at this time.

In the eastward process, the Teutonic Knights evolved from a military organization to a quasi-state organization of 170,000 square kilometers and a population of 1 million. In Europe, where princes and castles are everywhere, this volume is quite impressive.

Even with the establishment of the state, the Teutonic Knights obeyed the orders of the Church of Rome. Later, Martin Luther set off the Reformation, and at Luther's suggestion, the Knights formally broke with the Church of Rome and converted it into a secular state, which was the Duchy of Prussia.