The Concert of Europe was very much a response to the French Revolution. From the outbreak of the French Revolutionary Wars in 1792 to the exile of Napoleon to Saint Helena in 1815, Europe had been almost constantly at war. All the European powers were short of the funds, materiel, and manpower necessary for further fighting and therefore sought structures to avoid new conflicts. The military conquests of France had resulted in the spread of liberalism throughout much of the continent, including the adoption of the reforms such as the Napoleonic Code. Having seen how the French Revolution had begun with calls for fairly mild reforms but had quickly led to radical democratic reforms and attacks on the aristocracy, the Concert of Europe also sought to tamp down on liberal and democratic movements across the continent. Finally, the French Revolution also provided a model for nationalist movements and both sides in the Napoleonic Wars had sought to exploit nationalist sentiment when convenient to their war aims. For example, the French supported the nationalist rising in Ireland against the British in 1798 and revived hopes of a Polish state by establishing the Duchy of Warsaw in ethnically Polish lands to help fight the Prussians, Russians, and Austrians. The Allies supported nationalist movements in Spain and Germany to encourage resistance against French-established governments there. Along with the restoration of the Bourbon monarchy in France, the Concert of Europe was in many ways an effort to return as far as possible to the status quo of Europe prior to 1789.