On 11 October 1946, Tage Erlander became prime minister of Sweden. He took over after the death of Per Albin Hanssen, president of the Swedish Social Democratic Workers' Party.

Hanssen served two terms, from 1932 to 1946. In parallel with Franklin Delano Roosevelt's "New Deal" in the United States, he implemented a series of socio-economic reforms that allowed Sweden to recover from the Great Depression. In 1940, he refused to form a defensive alliance with Finland against the Soviet Union. Due to the supply of iron ore to Germany until 1943, Hanssen managed to avoid the country being occupied. Sweden's diplomatic relations with Nazi Germany were dissolved on 7 May 1945. On 6 October 1946, Hanssen died from a heart attack at a tram stop on his way to work.

Tage Erlander held the premiership for 23 years, a record for democratic countries. During his tenure in office, several social reforms were carried out, including the introduction of a basic pension, children’s allowances and sickness benefits, as well as enacting laws on health insurance and social assistance.

In terms of the economy, the socialists rarely resorted to nationalisation, and yet the country came very close to being a welfare state. On the international stage, Sweden maintained neutrality and did not join NATO.

Yet, Erlander started to break the tradition of neutrality and at the end of the 20th century, Sweden took part in NATO military operations. For example, a Swedish battalion of peacekeeping forces, led by NATO, arrived in Bosnia and Herzegovina in 1995. In 1999, Sweden sent its troops to Kosovo. 

Source:

Ruin, Olof. Tage Erlander: serving the welfare state, 1946–1969 (University of Pittsburgh Press, 1989).