Economy of Denmark food products. In 2017 total output (gross value added) in service industries amounted to 75.2% of total output in Denmark, and 79.9% of all employed people worked here (in 2016). Apart from public administration, education and health services, main service sub-industries were trade and transport services, and business services. Significant investment has been made in building road and rail links between Copenhagen and Malmö, Sweden (the Øresund Bridge), and between Zealand and Funen (the Great Belt Fixed Link). The Copenhagen Malmö Port was also formed between the two cities as the common port for the cities of both nations. The
History of Copenhagen a fairly wide area. In the 12th century Copenhagen assumed increasing importance and the town was reinforced with earthworks. The Roman Catholic Church erected cathedrals in Roskilde and in Lund (in what is now Sweden), which laid the basis for further development in those regional centres. As Copenhagen was midway between the two cities, it was centrally located for traffic and trading. The earliest written mention of the town dates back to the 12th century, when Saxo Grammaticus in Gesta Danorum refers to it as "Portus Mercatorum", which translates into Merchants' Harbour or in the Danish of the time "Købmannahavn".