>‘I prohibit the sale of any man by another outside of the country,’ says the ninth law of William the Conqueror preventing "hands drain" so to speak. They did

>‘I prohibit the sale of any man by another outside of the country,’ says the ninth law of William the Conqueror preventing "hands drain" so to speak. They did Doomsday book, kind of stabilized the land ownership and revenue/taxes extraction based on it, and the land needs hands to produce the revenue.