The Frankish minority in Aquitania was growing throughout the province and began to become upwardly mobile as they moved into the Province. The Authorities in Aquitania, after the potential invasion from Britannia and the conquest of the Scandinavian and other Provinces on the Mare Suebicum, began to relax their racial policies against the Franks. The Franks began to create printing factories as well as making the factories that make the printing presses. The illustrations in the margins of books became a notable feature of Frankish printing and the particularly vibrant colors from specific chemicals found in northern Aquitania. The first assembly line was invented by the Franks but the few people that could be found in the Provinces were not enough to effectively use this technology.