Trade with the Enemy in the Scandinavian and Baltic Ports during the Napoleonic War: for and against
The French victories over Prussia and Russia in 1806–07 enabled Napoleon to impose upon the continent a peace diametrically opposed to the interests of Britain. An essential condition of it, as was made clear in the Berlin Decree and the Franco-Russian treaty of Tilsit, was that Britain should be banished from Europe. Within a few months of the Tilsit agreement in July 1807 all the northern powers, except Sweden which kept out of the French alliance until 1810, were formally at war with Britain and were pledged to break their commercial connexions with her. It appeared that Napoleon, with the aid of Russia, Prussia and Denmark–Norway, had finally shut the Baltic to British trade and had thus made the commercial exclusion of Britain from the continent a reality. As things turned out, trade between Britain and the north of Europe, though harassed by enemy commerce raiders and impeded by French agents, was not destroyed. The Scandinavian and Baltic ports, the last in Europe to come under French influence, were never firmly closed even when Napoleon''s continental system was most effectively enforced in 1811