Sweden fills the eastern side of the Scandinavian peninsula, from the plains and beech woods of Skåne in the south to the mountains, mires and reindeer country of Lapland above the Arctic Circle. Forests cover most of the land, the great lakes Vänern, Vättern and Mälaren hold the heart of the country together, and a long Baltic coast of skerries and bays opened the way to trade and conquest. For thousands of years hunters, farmers and traders lived here: the Svear around the Mälaren valley, the Geats in Götaland, the Gutes on the island of Gotland and the Sámi, the Indigenous people of the north.

From the seventh century the elite of Uppsala, Vendel and Birka built great mounds and boat graves, and Swedish traders and warriors sailed east along the Russian rivers as the Rus' and Varangians. Olof Skötkonung was baptised about 1008, the Stenkil, Sverker and Eric dynasties made Sweden a Christian kingdom with Finland as its eastern march, and Birger Jarl and Magnus Ladulås built the state of the Folkung kings. In 1397 the Kalmar Union tied Sweden to Denmark and Norway, until Gustav Vasa won the throne in 1523 and led the Reformation.

In the seventeenth century Gustavus Adolphus and Charles XII made Sweden a Baltic empire, until defeat at Poltava and the peace of Nystad in 1721. Finland was lost to Russia in 1809, the Bernadotte dynasty ruled in union with Norway from 1814 to 1905, and a poor farming country sent more than a million emigrants to America before it industrialised. Sweden had its last war in 1814 and stayed neutral in both world wars, built the Social Democratic welfare state of the folkhem, joined the European Union in 1995 and NATO in 2024. After the election of 13 September 2026 the results are being negotiated.

Explore the ten ages below through selected events from the timeline.