The document discusses the rise of nationalism in Europe between the 18th and 19th centuries. It describes how the French Revolution spread the idea of the nation-state and nationalism across Europe. In the early 19th century, liberal nationalism grew among the middle class who sought individual freedoms, representative government, and an end to autocratic rule. However, conservative regimes resisted these changes after 1815, leading revolutionaries like Giuseppe Mazzini to form secret societies to promote nationalist ideals and independence movements. Major events that shaped the period included the Treaty of Vienna in 1815 and the Zollverein customs union formed in 1834.