What type of government did Napoleon Bonaparte support, and what year was he in power?

Answer 1

He was in power from 1799 to 1815.

In January 1804, Bonaparte's police uncovered an assassination plot against him, ostensibly sponsored by the Bourbons. In retaliation, Bonaparte ordered the arrest of the Duc d'Enghien, in a violation of the sovereignty of Baden. After a hurried secret trial, the Duke was executed on 21 March. Bonaparte then used this incident to justify the re-creation of a hereditary monarchy in France, with himself as Emperor, on the theory that a Bourbon restoration would be impossible once the Bonapartist succession was entrenched in the constitution.

Napoleon crowned himself Emperor on 2 December 1804 at Notre Dame de Paris.

The Napoleonic Code was adopted throughout much of Europe and remained in force after Napoleon's defeat. Professor Dieter Langewiesche of the University of Tübingen describes the code as a "revolutionary project" which spurred the development of bourgeois society in Germany by expanding the right to own property and breaking the back of feudalism.

Answer 2

He was an emperor, so I would say an empire. 1700s.