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Requirements for US Citizens to Enter Sweden
During the seventh and eighth centuries, the Swedes were merchant seamen well known for their far-reaching trade. In the ninth century, Nordic Vikings raided and ravaged the European continent as far as the Black and Caspian Seas. During the 11th and 12th centuries, Sweden gradually became a unified Christian kingdom that later included Finland. Queen Margaret of Denmark united all the Nordic lands in the "Kalmar Union" in 1397. Continual tension within the countries and within the union gradually led to open conflict between the Swedes and the Danes in the 15th century. The union's final disintegration in the early 16th century brought on a long-lived rivalry between Norway and Denmark on one side and Sweden and Finland on the other. In the 16th century, Gustav Vasa fought for an independent Sweden, crushing an attempt to restore the Kalmar Union and laying the foundation for modern Sweden. At the same time, he broke with the Catholic Church and established the Reformation. During the 17th century, after winning wars against Denmark, Russia, and Poland, Sweden-Finland (with scarcely more than 1 million inhabitants) emerged as a great power. Its contributions during the Thirty Years War under Gustav II Adolf (Gustavus Adolphus) determined the political as well as the religious balance of power in Europe. By 1658, Sweden ruled several provinces of Denmark as well as what is now Finland, Ingermanland (in which St. Petersburg is located), Estonia, Latvia, and important coastal towns and other areas of northern Germany.
