Since the Golden Bull, bestowed by King Bela IV pronouncing Gradec a free royal city in 1242, Zagreb has been a craft and trade "Eldorado" and this is why these activities have developed so much. A great industrial giant was born with the construction of the railway to the city in 1862 when the first factories were built. The most developed are the metal industry, the electronic and radio industries, the chemical industry, the pharmaceutical industry, the graphic industry, the textile industry, and a very powerful construction industry whose state of the art technology is at work in Europe, Africa and Asia. The able Zagreb businessmen tried without success in the former state to combat state controlled prices which led many of them to suffer losses. Only the new Croatian government boldly introduced a law in favour of a market economy where the government no longer sets prices, rather the market does, where the best producers can stay alive in the competitive market. With this, vital Croatian enterprises have been given freedom to move on the market, thus INA is beginning its first real market game with its main operations focussing on the processing of seven million tons of oil a year, of natural gas and artificial fertilisers as well as an entire chemical industry based on oil.