Ordered a BLOCKADE to stop trade between Britain and other European nations. Napoleon called this the CONTINENTAL SYSTEM.
The blockade did not work - instead, it weakened the French economy.
He put his brother, Joseph Bonaparte, on the SPANISH throne in 1808. The Spanish people (aided by the British) rebelled and fought Napoleon in the PENINSULAR war, which lasted for 5 years. Napoleon lost 300,00 troops.
Napoleon tried to conquer RUSSIA.
The Russians RETREATED! But, they burned their fields and killed thier livestock so that Napoleon's armies couldn't eat anything the left behind.
This was known as the SCORCHED EARTH policy.
Napoleon was now in a position of weakness...