The Napoleonic Wars of the early 19th century ended an era of peace for Denmark and Norway that had lasted since the 1720s. The armed neutrality treaty of 1794 between Denmark and Sweden, which Russia and Prussia joined in 1800, was considered hostile by Great Britain. In 1801 British navy ships entered The Sound and destroyed much of the Danish fleet in a battle in the Copenhagen harbor. When the British fleet next proceeded to threaten the Swedish naval port of Karlskrona, Russia started negotiations with Britain. The result was a compromise, which Sweden was forced to adopt in 1802. While the Danish policy of armed neutrality had failed, Denmark nevertheless managed to keep out of the wars until 1807 and to profit from trade with the belligerents.

The Treaty of Tilsit (1807) between France and Russia worsened the situation. In 1805 France had lost its fleet to the British at the Battle of Trafalgar. The British thus feared that the continental powers might force Denmark to join them so that the Danish navy could be used to invade Britain. To eliminate this threat, the British resorted not to diplomacy but to force. In August 1807 British troops invaded and occupied Zealand; in September British ships bombarded Copenhagen with grenades and incendiary bombs, destroying three-fourths of the city and killing thousands. Denmark, not prepared for war, was forced to capitulate, and the British expropriated the Danish fleet.

On Oct. 31, 1807, Denmark joined the continental alliance against Britain. In response, Britain blockaded the sea route connecting Denmark and Norway. Grain shipments from Denmark to Norway stopped, and Norwegian exports could not get out. Britain somewhat relaxed its blockade after 1810, but the years of isolation, economic crisis, and hunger in Norway nevertheless convinced leading groups there of the necessity of Norwegian independence.

In 1813 Sweden, which had become an ally of Britain, attacked Denmark from the south, through Schleswig-Holstein. Hostilities between the two countries were ended on Jan. 14, 1814, by the Treaty of Kiel, but Denmark was forced to cede Norway to Sweden. (However, Denmark maintained its rule of the old Norwegian dependencies of Iceland, the Faroe Islands, and Greenland.) Unhappy at the prospect of Swedish rule, leading Norwegians assembled at the Norwegian village of Eidsvoll, where they adopted a constitution and elected the Danish crown prince and governor of Norway, Christian Frederick (later Christian VIII), to the Norwegian throne. Sweden promptly attacked Norway, however, and Christian Frederick stepped down. Compelled to accept Swedish rule, Norway could not fully implement the Eidsvoll constitution until 1905, when it finally gained independence.

The Napoleonic Wars proved to be economically catastrophic for Denmark. Trade had been seriously affected, and the widespread overseas connections that formerly had played so large a part in the economic life of Denmark could not be resumed. Copenhagen had been devastated, and its role as an international financial and trading center was soon taken over by Hamburg. Inflation further contributed to the economic crisis. In 1813 the state was forced to make a formal declaration of bankruptcy.

Denmark’s considerable economic problems were worsened by low grain prices across Europe. The loss of Norway and the high import duties on grain that Great Britain imposed at this time deprived Denmark of its surest markets for grain export. The agricultural crisis resulted in the compulsory auctioning of many estates and farms; it also brought the implementation of agrarian reforms to a complete standstill.

It was not until 1818, when an independent national bank with the sole right to issue banknotes was established, that economic stability became possible. From 1830, economic life decidedly took a turn for the better. Prices for agricultural goods improved, and the earlier land reforms were beginning to show results. In fact, the 1830s saw a significant expansion in the agricultural sector of the economy.

The liberal movement

Denmark’s government under Frederick VI (1808–39) can be described as a patriarchal autocracy. In the Privy Council, which was regularly convened after 1814, Poul Christian Stemann became the leading figure and was responsible for the government’s strongly conservative policies until 1848. His close colleague Anders Sandøe Ørsted pleaded for a somewhat more liberal policy, at least on economic questions.

After the July Revolution (1830) in France, leading men, particularly wealthy merchants and professionals, demanded a liberal constitution. The government was forced to make concessions, and in 1834 consultative assemblies were established in the kingdom as well as in Schleswig and Holstein. Being composed only of wealthy men, however, these were not representative bodies, and their function was only advisory. As the liberal movement grew in strength, especially in the academic world and among the middle classes, the liberal press, whose leading journal was Fædrelandet (“The Fatherland”; established in 1834), subjected the monarchy and its conservative administration to severe criticism. When the popular Frederick VI died in 1839, the liberals had great hopes for his successor, Christian VIII, who, during his youth as governor in Norway, had appeared as the spokesman for liberal politics. Over the years, however, Christian VIII had become much more conservative and, as king of Denmark, did not consider the time ripe to moderate the absolute monarchy. He confined himself, therefore, to modernizing the administration, especially between 1837 and 1841, through a program of establishing local government and granting some independence to parishes and counties.

As the liberals gained a political voice, so did the farmers. The farmers’ movement started as a religious one, but it soon became dominated by social and political ideas, with agitators such as Jens Andersen Hansen leading the way. When the government intervened, the liberals and the farmers joined forces against the common adversary. In 1846 the farmers’ case received further support when a group of liberal reformers led by Anton Frederik Tscherning founded the Society of the Friends of the Farmer (Bondevennernes Selskab), which later developed into the Liberal Party (Venstre; “Left”).

After the death of Christian VIII in January 1848 and under the influence of the Revolutions of 1848 in France, Germany, and elsewhere, the new king, Frederick VII (1848–63), installed the so-called March Cabinet, in which Orla Lehmann and Ditlev Gothard Monrad, leaders of the newly formed National Liberal Party, were given seats. After a constituent assembly had been summoned, the absolute monarchy was abolished; it was replaced by the so-called June constitution of June 5, 1849. Together with the king and his ministers, there was now also a parliament with two chambers: the Folketing and the Landsting. Both were elected by popular vote, but seats in the Landsting had a relatively high property-owning qualification. The parliament shared legislative power with the king and the cabinet, while the courts independently exercised judicial power. The constitution also secured the freedom of the press, religious freedom, and the right to hold meetings and form associations.