the abdication of Napoleon and the end of the supply problems with Wellington's army, New England was blockaded. The British needed American foodstuffs for their army in Spain and benefited from trade with New England, so they did not at first blockade New England. The Delaware River and Chesapeake Bay were declared in a state of blockade on 26 December 1812. Illicit trade was carried on by collusive captures arranged between American traders and British officers. American ships were fraudulently transferred to neutral flags. Eventually, the United States government was driven to issue orders to stop illicit trading. This put only a further strain on the commerce of the country. The British fleet occupied the Chesapeake Bay and attacked and destroyed numerous docks and harbours. The effect was that no foreign goods could enter the United States on ships and only smaller fast boats could attempt to get out. The cost of shipping became very expensive as a result. The blockade of American ports later tightened to the extent that most American merchant ships and naval vessels were confined to port. The American frigates and ended the war blockaded and hulked in New London, Connecticut. USS United States and USS Macedonian attempted to set sail to raid British shipping in the Caribbean, but were forced to turn back when confronted with a British squadron, and by the end of the war, the United States had six frigates and four ships-of-the-line sitting in port. Some merchant ships were based in Europe or Asia and continued operations. Others, mainly from New England, were issued licences to trade by Admiral Warren, commander in chief on the American station in 1813. This allowed Wellington's army in Spain to receive American goods and to maintain the New Englanders' opposition to the war. The blockade nevertheless decreased American exports from $130 million in 1807 to $7 million in 1814. Most exports were goods that ironically went to supply their enemies in Britain or the British colonies. The blockade had a devastating effect on the American economy with the value of American exports and imports falling from $114 million in 1811 down to $20 million by 1814 while the United States Customs took in $13 million in 1811 and $6 million in 1814, even though the Congress had voted to double the rates. The British blockade further damaged the American economy by forcing merchants to abandon the