Soon central Europe was dotted with small principalities, each one ruled by a duke or a count or a baron or a bishop, as the case might be, and organised as a fighting unit. These dukes and counts and barons had sworn to be faithful to the king who had given them their "feudum" (hence our word "feudal,") in return for their loyal services and a certain amount of taxes. But travel in those days was slow and the means of communication were exceedingly poor. The royal or imperial administrators therefore enjoyed great independence, and within the boundaries of their own province they assumed most of the rights which in truth belonged to the king.
But you would make a mistake if you supposed that the people of the eleventh century objected to this form of government. They supported Feudalism because it was a very practical and necessary institution. Their Lord and Master usually lived in a big stone house erected on the top of a steep rock or built between deep moats, but within sight of his subjects. In case of danger the subjects found shelter behind the walls of the baronial stronghold. That is why they tried to live as near the castle as possible and it accounts for the many European cities which began their career around a feudal fortress.
But the knight of the early middle ages was much more than a professional soldier. He was the civil servant of that day. He was the judge of his community and he was the chief of police. He caught the highwaymen and protected the wandering pedlars who were the merchants of the eleventh century. He looked after the dikes so that the countryside should not be flooded (just as the first noblemen had done in the valley of the Nile four thousand years before). He encouraged the Troubadours who wandered from place to place telling the stories of the ancient heroes who had fought in the great wars of the migrations. Besides, he protected the churches and the monasteries within his territory, and although he could neither read nor write, (it was considered unmanly to know such things,) he employed a number of priests who kept his accounts and who registered the marriages and the births and the deaths which occurred within the baronial or ducal domains.