Anglo-Portuguese Treaty of Windsor: the oldest active treaty in the world
Anglo-Luso Treaty: established the right to English burial grounds in Portugal
Second Treaty of San Ildefonso
Spain and France join forces against the British Empire.
Portugal refuses to comply with Napoleon's embargo on trade with Britain.
British defeat Spanish fleet at Cape St.Vincent, Portugal
War of the Oranges
French and Spanish troops invade Portugal
Spain seizes Olivença
Peace of Badajoz: Portugal agrees to close its ports to Britain
One year of peace between Britain and France 1792-1815
Britain declares war on France 18 May 1803
Spain joins France against Britain and allied forces
Nelson defeats Spanish and French fleets at Cape Trafalgar Portugal restores relations with Britain
Embargo on trade with Britain. Portugal refuses to comply; therefore is subject to annexation by France