The document summarizes the period of 1815-1848 in Europe known as the Restoration. Major powers sought to restore pre-revolutionary monarchies and balance power through alliances like the Holy Alliance and Quadruple/Quintuple Alliance. However, liberal and nationalist ideas inspired revolutions seeking constitutions and more rights. The Congress system intervened to suppress revolutions in Spain, France, Greece, Portugal, and Belgium. France had multiple changes in regime from constitutional to ultra-royalist rule. Britain avoided revolution through parliamentary democracy, legal reforms, and expanding suffrage.