. . . . . . . . . . "Mudsill theory is the proposition that there must be, and always has been, a lower class or underclass for the upper classes and the rest of society to rest upon. The term derives from a mudsill, the lowest threshold that supports the foundation for a building."@en . . . . . . . . . . . . . . "Mudsill theory"@en . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "4545581"^^ . . . "Mudsill theory is the proposition that there must be, and always has been, a lower class or underclass for the upper classes and the rest of society to rest upon. The term derives from a mudsill, the lowest threshold that supports the foundation for a building."@en . . "1111090148"^^ . . . . . . . . . . . . . . . . . . . . . "5080"^^ . . . . . . . . . . . . . . . . . . .