Modern Sweden emerged out of the Kalmar Union formed in 1397 and by the unification of the country by King Gustav Vasa in the 16th century. In the 17th century Sweden expanded its territories to form the Swedish empire. Most of these conquered territories had to be given up during the 18th century. In the early 19th century Finland and the remaining territories outside the Scandinavian peninsula were lost. After its last war in 1814, Sweden entered into a personal union with Norway which lasted until 1905. Since 1814, Sweden has been at peace, adopting a non-aligned foreign policy in peacetime and neutrality in wartime.
Pre-historic age: 9,000 BC–AD 800

Sweden, as well as the adjacent country Norway, has a high concentration of petroglyphs throughout the country, with the highest concentration in the province of Bohuslän. The earliest images can, however, be found in the province of Jämtland, dating from 5000 BC. They depict wild animals such as elk, reindeer, bears and seals. The period 2300–500 BC was the most intensive carving period, with carvings of agriculture, warfare, ships, domesticated animals, etc. Also, petroglyphs with themes of sexual nature have been found in Bohuslän; these are dated from 800–500 BC.


Early Swedish history: 800–1500

A foundation date of the nation Sweden cannot be determined with any degree of certainty, since it evolved from a warfare center of power, Svea Rike, centered in old Uppsala, which might have had many increases and decreases in power and influence. The existence of such a power is stated already by Tacitus (see Suiones), around AD 100. The neighboring areas of West and East Geats probably also played a very important historical role in defining the nation. About AD 1000, the first certain king over Svea and Göta Riken is documented to be Olof Skötkonung, but the further history is obscure with kings whose periods of regency and actual power is unclear. In the 12th century, Sweden was still consolidating with the dynastic struggles between the Erik and Sverker clans, which finally ended when a third clan married into the Erik clan and founded the Folkunga dynasty on the throne. This dynasty gradually consolidated a pre-Kalmar-Union Sweden to an actual nation, which essentially fell apart after the Black Death. The conversion from pre-Christian beliefs to Christianity was a complex, gradual, and at times possibly violent (see Temple at Uppsala) process. The main early source of religious influence was England due to interactions between Scandinavians and Saxons in the Danelaw, and Irish missionary monks. The German influence was less obvious in the beginning (despite an early missionary attempt by Ansgar), but gradually emerged as the dominant religious force in the area (especially after the Norman conquest of England). Despite the close relations between Swedish and Russian aristocracy (see also Rus'), there is no direct evidence of Orthodox influence, possibly because of language barriers.

This consolidated state of Sweden already included Finland presumably from an early crusade into the area of Tavastland in central current day Finland.

After the Black Death and internal power struggles in Sweden, Queen Margaret I of Denmark united the Nordic countries in the Kalmar Union in 1397, with the approval of the Swedish nobility. Continual tension of economic nature within the countries and within the union gradually led to open conflict between the Swedes and the Danes in the 15th century, however. The union's final disintegration in the early 16th century brought on a long-lived rivalry between Denmark on one side and Sweden on the other.


Modern Sweden: 1523

In the 16th century, Gustav Vasa fought for an independent Sweden, crushing an attempt to restore the Kalmar Union and laying the foundation for modern Sweden. At the same time, he broke with the Roman Catholic Church and established the Reformation.


The rise of Sweden as a great power: 1600

After winning wars against Denmark-Norway, Russia, and Poland during the 17th century, Sweden emerged as a Great Power, despite having scarcely more than 1 million inhabitants. Its contributions during the Thirty Years' War under Gustavus Adolphus helped determine the political, as well as the religious, balance of power in Europe.


The Swedish Empire: 1648

By the treaties of Brömsebro, 1645, and Roskilde, 1658, Sweden acquired important provinces of Denmark and Norway. Following the Peace of Westphalia in 1648, Sweden ruled Ingria, in which Saint Petersburg later would be founded, Estonia, Livonia, and areas of northern Germany (Bremen, Verden, Wismar and Swedish Pomerania).



The Great War: 1700

Russia, Saxony-Poland, and Denmark-Norway pooled their power in 1700 and attacked the Swedish empire. Although the young Swedish King Charles XII won spectacular victories in the early years of the Great Northern War, his plan to attack Moscow and force Russia into peace proved too ambitious; he was shot during the siege of Frederiksten fortress in Norway in 1718. In the subsequent peace treaties, the allied powers, joined by Prussia and by England-Hanover, ended Sweden's reign as a great power and introduced a period of limited monarchy under parliamentary rule.


Absolute monarchy: 1772

Following half a century of parliamentary domination came the reaction. A bloodless coup d'état perpetrated by King Gustav III brought back absolute monarchy, a state of affairs that would last until involvement in the Napoleonic wars forced Sweden to cede Finland to Russia in 1809.


Union with Norway: 1814

The following year, the Swedish King's adopted heir, French Marshal Jean-Baptiste Bernadotte, was elected Crown Prince Charles by the Riksdag. In 1813, his forces joined the allies against Napoleon and defeated the Danes at Bornhöved. In the Treaty of Kiel, the king of Denmark-Norway ceded mainland Norway to the Swedish king. Norway, however, declared its independence, adopted a constitution and chose a new king. Sweden invaded Norway to enforce the terms of the Kiel treaty. After a short war, the peace of Moss established a personal union between the two states. The union lasted until 1905, when it was peacefully dissolved at Norway's request. During Charles XIV reign (1818-1844), a soft but efficient industrialisation began. This first take-off was founded on rural forges, textile proto-industries and sawmills.


Modernization of Sweden: 1866

Sweden's predominantly agricultural economy shifted gradually from village to private farm-based agriculture during the Industrial Revolution, but this change failed to bring economic and social improvements commensurate with the rate of population growth. About 1 million Swedes emigrated to the United States between 1850 and 1890.

The 19th century was marked by the emergence of a liberal opposition press, the abolition of guild monopolies in trade and manufacturing in favour of free enterprise, the introduction of taxation and voting reforms, the installation of national military service, and the rise in the electorate of three major party groups – Social Democrat, Liberal, and Conservative.


Industrialization of Sweden: 1914

During and after World War I, in which Sweden remained neutral, the country benefitted from the worldwide demand for Swedish steel, ball bearings, wood pulp, and matches. Post-war prosperity provided the foundations for the social welfare policies characteristic of modern Sweden. Foreign policy concerns in the 1930s centered on Soviet and German expansionism, which stimulated abortive efforts at Nordic defence co-operation. Sweden followed a policy of armed neutrality during World War II and currently remains non-aligned.


Sweden during World War II

Sweden remained neutral during World War II, despite the involvement of all its neighbors. Sweden provided assistance to both warring parties.



A History of Sweden to 1914
Haparanda
Ruskola
Haapakyla
Vuono
Nederkalix
Gammelgarden
Koivukyla
Korpikyla
Armassari
Vojakkala
Pirkkio
Ammansaari
Tervahauta
Lappinjarvi
Mattila

Rauma