By appointing people close to him, it also shows how Napoleon liked to centralize power around himself as by having loyal people around him, he could easily influence their role and in effect manage the country/state himself through the use of a family member or close friend, showing that Napoleon in fact looked to manage Europe as independently as possible
This trend is also followed in countries such as Holland, Poland, Italy and Germany with these countries gaining more centralized power, allowing for more stable governments. As well as this, Napoleon's level of control on different countries differed based upon their location. Lands that had been annexed to France were directly ruled from Paris which included Belgium and the left bank of the Rhine. This shows that countries geographically close to France were directly ruled because they would act as a protective zone to France from attacks from enemies and troops could quickly be called upon if required by France, which agrees with Napoleon when he justifies that the creation of the Empire is for the protection of France and for France to gain the rewards from. Provinces such as Illyria and Catalonia which had not been annexed were administered by prefects from Paris.
Napoleon used the system of conscription across the Empire to improve the French military, while pressuring countries across Europe to provide a number of troops for the French. Between 1807-1813, French military expenditure rose from 462 million francs to 817 million francs. Frequently, Napoleon's imperialism and desire to create an Empire led to military conquests which paid for these campaigns, with an example being after the battle of Jena in 1806, where the Prussians were forced to pay the French 311 million francs. By using conscripts from across Europe, Napoleon could lower this expenditure while using money received from his conquests internally within France.
