"Masonry allows the building of palaces, city walls, the Great Wall and Pyramids. It is a prerequisite of construction, feudalism and mathematics."@en . . . . . . . . . "None"@en . "Masonry allows the building of palaces, city walls, the Great Wall and Pyramids. It is a prerequisite of construction, feudalism and mathematics."@en . "Masonry (Civ1)"@en . . . . .