Chronological history Sweden has a large number of petroglyphs (hällristningar[2] in Swedish), with the highest concentration in the province of Bohuslän and the northern part of the county of Kalmar, also called "Tjust".
After a century of civil wars, a new royal family emerged, which strengthened the power of the crown at the expense of the nobility, while giving the nobles privileges such as exemption from taxation in exchange for military service.
The main early source of religious influence was England, due to interactions between Scandinavians and Saxons in the Danelaw, and with Irish missionary monks.
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.
After the Black Death and internal power struggles in Sweden, Queen Margaret I of Denmark (the former daughter-in-law of King Magnus Eriksson) united the Nordic countries in the Union of Kalmar in 1397, with the approval of the Swedish nobility.
During the 17th century, after winning wars against Denmark, Russia, and Poland, Sweden (with scarcely more than 1 million inhabitants) emerged as a great power by taking direct control of the Baltic region, which was Europe's main source of grain, iron, copper, timber, tar, hemp, and furs.
From bridgeheads in Stralsund (1628) and Pomerania (1630), the Swedish army advanced to the south of the Holy Roman Empire, and in a side theater of the war deprived Denmark–Norway of Danish Estonia, Jämtland, Gotland, Halland, Härjedalen, Idre and Särna, became exempt from the Sound Dues, and established claims to Bremen-Verden, all of which was formalized in the Treaty of Brömsebro (1645).
In 1648, Sweden became a guarantor power for the Peace of Westphalia, which ended the Thirty Years' War and left her with the additional dominions of Bremen-Verden, Wismar and Swedish Pomerania.
The Grand Duchy of Lithuania became a Swedish fief, the Polish–Lithuanian regular armies surrendered and the Polish King John II Casimir Vasa fled to the Habsburgs.
The Deluge lasted for five years and took a great toll on Poland and Lithuania, with some historians crediting this invasion as the start of the downfall of Polish-Lithuanian Commonwealth.
Although the young Swedish King Charles XII (1682–1718; reigned 1697–1718) won spectacular victories in the early years of the Great Northern War, most notably in the stunning success against the Russians at the Battle of Narva (1700), his plan to attack Moscow and force Russia into peace proved too ambitious.
Meanwhile, back in the north, Sweden was invaded by its enemies; Charles returned home in 1714, too late to restore his lost empire and impoverished homeland; he died in 1718.
Although most early-19th-century historians tended to follow Voltaire's lead in bestowing extravagant praise on the warrior-king, others have criticised him as a fanatic, a bully, and a bloodthirsty warmonger.
A more balanced view suggests a highly capable military ruler whose oft-reviled peculiarities seemed to have served him well, but who neglected his base in Sweden in pursuit of foreign adventure.
Under the successor, King Gustav IV, Sweden joined various coalitions against Napoleon but was badly defeated and lost much of its territory, especially Finland and Pomerania.
Sweden purchased the small Caribbean island of Saint Barthélemy from France in 1784, then sold it back in 1878; the population had included slaves until they were freed by the Swedish government in 1847.
The popularity of Charles XIV decreased for a time in the 1830s, culminating in the Rabulist riots in 1838 after the Lèse-majesté conviction of the journalist Magnus Jacob Crusenstolpe, and some calls for his abdication.
For men and women of working age, the death rate trend diverged, however, leading to increased excess male mortality during the first half of the century.
[21] The introduction of compulsory gymnastics in Swedish schools in 1880 rested partly on a long tradition, from Renaissance humanism to the Enlightenment, of the importance of physical as well as intellectual training.
The organization focused its efforts on patriotic, militaristic, heroic, and environmental Swedish traditions as they relate to ski sports and outdoor life.
The strong farmer representation in the Second Chamber of the Riksdag maintained a conservative view, but their decline after 1900 gradually ended opposition to full suffrage.
Religion maintained a major role but public school religious education changed from the drill in the Lutheran catechism to biblical-ethical studies.
Sweden was neutral in World War I, although the Swedish government was sympathetic to both sides at different times during the conflict, even briefly occupying the Åland islands jointly with the Germans.
At first, the Swedish government flirted with the possibility of changing their neutral stance to side with the Central Powers, and made concessions to them including mining the Öresund straits to close them to Allied warships wishing to enter the Baltic.
During the First World War and the 1920s, its industries expanded to meet the European demand for Swedish steel, ball bearings, wood pulp, and matches.
This helped Sweden avoid the severe extremist challenges and political and class divisions that plagued many European countries that attempted to develop social democratic systems after 1911.
[24] When the Social Democratic Party came into power in 1932, its leaders introduced a new political decision-making process, which later became known as "the Swedish model" or the Folkhemmet (The People's Home).
Sweden did permit German troops to pass through its territory to and from occupation duties in Norway,[26] and supplied the Nazi regime with steel and ball-bearings.
As part of the military cooperation, the U.S. provided much help in the development of the Saab 37 Viggen, as a strong Swedish air force was seen as necessary to keep Soviet anti-submarine aircraft from operating in the missile launch area.
In return, Swedish scientists at the Royal Institute of Technology made considerable contributions to enhancing the targeting performance of the Polaris missiles.