What do we do, make a new SmsLogger class and then replace everywhere in the code instead of the DatabaseLogger() constructor, we initialize new SmsLogger()? That is just waste of time. And the day after tomorrow I no longer want SMS'es but instead something else..
Quick Answer. Napoleon's influence on Europe included the spread of nationalism, shifts in world power, major redrawing of political boundaries and the diffusion of Napoleonic ideas of governance. The political climate of Europe following Napoleon's downfall was very different than it had been prior to his rise to power.
After Napoleon's defeat, Europe reacted against nationalism for a while. The Congress of Vienna in 1814-1815 focused on developing a balance of power that would keep the peace in Europe and not give too much influence to any one nation.