One of the largest states in Europe and the greatest of the Protestant powers, Denmark in the sixteenth and seventeenth centuries was at the height of its influence. Embracing Norway, Iceland, portions of southern Sweden and northern Germany, the Danish monarchy dominated the vital Baltic trade. However, its geopolitical importance far exceeded its modest resources. Paul Douglas Lockhart examines the short and perhaps unlikely career of Denmark as the major power ofnorthern Europe, exploring its rise to the forefront of European affairs and its subsequent decline in fortunes following its disastrous involvement in the Thirty Years' War.