Denmark is a northern European country with a population of over 5 million people. It has a constitutional monarchy government and a mostly Lutheran Christian population. Denmark has a highly developed economy and culture. Some of its largest companies include Lego, Novo Nordisk, Vestas Wind Systems, and Maersk. Historically an agrarian society, Denmark transitioned to an industrial economy in the 20th century. It currently has a very strong economy and ranks highly in international business environment rankings. Denmark maintains diplomatic and economic relations with many countries around the world.