Illyrian Provinces

The Illyrian Provinces were an autonomous province of France during the First French Empire that existed under Napoleonic Rule from 1809 to 1814. The province encompassed large parts of modern Croatia and Slovenia, stretching over smaller areas of Italy, Montenegro, and Austria. Its capital was Ljubljana (German: Laybach, Laibach). It encompassed six departments, making it a relatively large portion of territorial France at the time. Parts of Croatia were split up into Civil Croatia and Military Croatia, the former served as a residential space for French immigrants and Croatian inhabitants and the latter as a military base to check the Ottoman Empire.

In 1809, Napoleon Bonaparte invaded the region with his Grande Armée after key wins during the War of the Fifth Coalition forced the Austrian Empire to cede parts of its territory. Integrating the land into France was Bonaparte's way of controlling Austria's access to the Mediterranean and Adriatic Sea and expanding his empire east. Bonaparte installed four governors to oversee French bureaucracy, culture, and language, the most influential of which was Auguste de Marmont. Marmont was succeeded by Henri Gatien Bertrand (1811–12), Jean-Andoche Junot (1812–13), and Joseph Fouché (1813–14).

Under the military occupation, Marmont disseminated Code Napoléon and attempted a vast infrastructural expansion. During 1810, the French authorities established the Écoles centrales in Croatia and Slovenia with French designated as the official language. Napoleon, depleted from manpower, introduced military conscription, uniform taxation, abolished certain tax privileges, separated church and state and nationalized the judiciary. The French were forced to withdraw the area after their defeat in the War of the Sixth Coalition as the Austrian Empire recovered the area in 1813–1814.