Sweden is a Scandinavian country located in Northern Europe. It's known as one of the Nordic countries bordering Norway and Finland, and is connected to Denmark. By area, Sweden is the third-largest country in the European Union, and has a population of just over 10 million people. Viking expeditions took off from Sweden between the 8th and 11th centuries, and the country became the Kingdom of Sweden sometime after. During the 17th century, Sweden emerged as a strong European power, and remained neutral during the First and Second World Wars. Today Sweden in a Constitutional Monarchy headed by King Carl XVI Gustaf and Queen Silvia. One of the most famous pop groups to emerge from Sweden is ABBA, who won the Eurovision song contest in 1974. To find out how much you know about Sweden, simply take this quiz.