The document summarizes key events in the formation of nation states and empires in Europe following the Napoleonic Wars and French Revolution. It discusses:
1) The Congress of Vienna in 1814-1815 which sought to restore the pre-Napoleonic monarchies and balance of power in Europe through the principles of compensation, balance of power, and legitimacy.
2) Revolutionary waves in the 1820s and 1830s as liberals sought reforms, leading Austria to crack down on dissent and intervene against revolutions.
3) The revolutions of 1848 which broke out across Europe calling for political and economic reforms but ultimately failed to bring lasting change.
4) The unification of Italy from