of account" used in the period. Comparisons with modern figures are extremely difficult; food items were comparatively cheap, but luxury goods and fabrics were very expensive. In the 15th century, an artisan could earn perhaps 30 livres a year; a great noble could have land revenues from 6,000 to 30,000 livres or more. A late seventeenth-century unskilled worker in Paris earned around 250 livres a year, while a revenue of 4000 livres a year maintained a relatively successful writer in modest comfort. At the end of the 18th century, a well-off family could earn 100,000 livres by the end of the year, although the most prestigious families could gain twice or three times that much, while, for provincial nobility, yearly earnings of 10,000 livres permitted a minimum of provincial luxury. Renaissance The economy of Renaissance France was, for the first half-century, marked by dynamic demographic growth and by developments in agriculture and industry. Until 1795, France was the most populated country in Europe and the third most populous country in the world, behind only China and India. With an estimated population of 17 million in 1400, 20 million in the 17th century, and 28 million in 1789, its population exceeded even Russia and was twice the size of Britain and Dutch Republic. In France, the Renaissance was marked by a massive increase in urban populations, although on the whole, France remained a profoundly rural country, with less than 10% of the population located in urban areas. Paris was one of the most populated cities in Europe, with an estimated population of 650,000 by the end of the 18th century. Agricultural production of a variety of food items expanded: olive oil, wine, cider, woad (Fr. "pastel", a source of blue dye), and saffron. The South grew artichokes, melons, romaine lettuce, eggplant, salsifys, celery, fennel, parsley, and alfalfa. After 1500 New World crops appeared such as beans, corn (maize), squash, tomatoes, potatoes, and bell peppers. Production techniques remained attached to medieval traditions and produced low yields. With the rapidly expanding population, additional land suitable for farming became scarce. The situation was made worse by repeated disastrous harvests in the 1550s. Industrial developments greatly affected printing (introduced in 1470 in Paris, 1473 in Lyon) and metallurgy. The introduction of the high-temperature forge in northeast France and an increase in mineral mining were important developments, although it was still necessary for France to import