The reasons for the gradual weakening of the empire of Napoleon.

Reasons for the weakening of the Napoleonic empire:
Numerous Napoleonic wars, exsanguinated France and worsened her financial situation;
Lean years;
The economic situation in the country and the people’s dissatisfaction with it;
Financial difficulties in France;
The despotism of the power of Napoleon;
Rebellions in the conquered countries provoked by the defeat of France in the Patriotic War of 1812;