The British and French blockades had disastrous effects on United States shipping. For instance before 1806 the U.S. was getting rich on European trade with Britain and France. Now an American ship bound for French ports had to stop first at a British port for inspection and payment of fees. hope this help.
To stay out of war, Thomas Jefferson put an embargo on Great Britain and France. But in the long run, that hurt America more than it hurt Spain or France.
