What was disastorous economic blockade of Enlgand by Napoleon called?

Answer 1

It was called Continental System or Continental Blockade. It was enacted on November 21, 1806 by Napoleon as a countermeasure against the naval blockade of the French coasts started by the Great Britain in May 1806.

It forbade all kind of trading relations between Great Britain and all European countries allied with or dependent upon France. But its effectiveness was limited by the British control of the sea, which allowed the British merchants to smuggle goods into those countries. On the long range this economic war caused more damages to France and its allied countries than those caused to Great Britain, and led to a general dissatisfaction among and a consequent weakening of the Napoleonic Coalition.