Before the mid-19th century, all houses and marketplaces in Antananarivo, and throughout Madagascar, were constructed of woods, grasses, reeds, and other plant-based materials viewed as appropriate for structures used by the living. Only family tombs were built from stone, an inert material viewed as appropriate to use for the dead. British missionaries introduced brick-making to the island in the 1820s, and French industrialist Jean Laborde used stone and brick to build his factories over the next few decades. It was not until the royal edict on construction materials was lifted in the 1860s that stone was used to encase the royal palace. Many aristocrats, inspired by the royal palace and the two-story, brick houses with wrapped verandas and divided interior spaces built by British missionaries, copied the British model for their own large homes in the ''haute ville''. The model, known as ''trano gasy'' ("Malagasy house"), rapidly spread throughout the Central Highlands of Madagascar, where it remains the predominant house construction style.