The Continental System or Continental Blockade was a large-scale embargo by French emperor Napoleon I against the British Empire from 21 November 1806 until 11 April 1814, during the Napoleonic Wars. Napoleon issued the Berlin Decree on 21 November 1806 in response to the naval blockade of the French coasts enacted by the British government on 16 May 1806. The embargo was applied intermittently, ending on 11 April 1814 after Napoleon's first abdication.