in the 16th century, a man named gustav ossa, who remained in the history of sweden , founded modern sweden. he became the king of sweden in 1523. and he was able to make many reforms in the churches, i.e. the conversion of the catholic church to protestantism and the country's tax system. in the period of gustav, the economy of the country flourished rapidly and the first modern army in europe with the tax system of the government it was supported and formed. from 1560 to 178 ad, sweden was involved in many wars with russia, denmark and poland. during these wars , regions such as latvia, finland and estonia were taken from the swedes. since 1800, the free trade system has expanded. also , in 1865, king oscar i of sweden agreed to amend the constitution . in the late 19th and early 20th centuries, sweden was transformed by the industrial revolution. so that the engineering industry and production of iron and steel prospered. sweden during world war i and ii. a strong welfare state was established in sweden in the late 1940s and 1950s. at at this time, reforms were made in the fields