What common effect did the Napoleonic Wars have on the European countries of Spain Austria and Russia?

The Napoleonic Wars significantly weakened Spain, Austria, and Russia by destabilizing their political structures and economies. In Spain, the conflict led to the Peninsular War, which fostered resistance and ultimately contributed to the country's struggles for independence in its colonies. Austria faced territorial losses and a decline in influence within Europe, while Russia experienced both military setbacks and the eventual emergence of nationalistic sentiments. Ultimately, the wars prompted all three nations to reconsider their positions and strategies in the shifting landscape of European power.