"The Swedish Revolution Under Gustavus Vasa" retells the life of Gustav I, born Gustav Eriksson of the Vasa noble family and later known as Gustav Vasa, who was King of Sweden from 1523 until he died in 1560. Gustav Vasa gradually became the country's leader during the Swedish War of Liberation. Gustav continued the way his predecessors began by freeing Sweden from foreign political and economic interests, such as the Kalmar Union with Denmark and the Catholic Church.