Building the gothic cathedrals: motor of an industrial and educational revolution

 "Although the Gothic cathedrals were dependent on the availability of finance and the growth of cities, they in their turn produced a massive transformation of the organization of labor, resources, and knowledge. Groups of tradesmen, masons, sculptors, carpenters, glaziers, smiths, and tilers began to develop. The start of an "industrial revolution".

The real estate agents of the Knights Templar

When they established themselves in certain Provençal towns, the military orders sought to rely on some urban knights by entrusting them with the task of making acquisitions for the benefit of the commanderies in formation. A practise which continued later. What did these "real estate agents" do?