Which of the following most threatened the balance of power that developed in 19th century Europe following the Napoleonic Wars? Independence movements in the Balkan region The widespread continued support for classical liberalism The abolition of serfdom in Eastern Europe The rapid development of industry in Russia

Which of the following most threatened the balance of power that developed in 19th century Europe following the Napoleonic Wars? Independence movements in the Balkan region The widespread continued support for classical liberalism The abolition of serfdom in Eastern Europe The rapid development of industry in Russia