The Spanish Constitution of 1812 was proclaimed by liberal factions in Cádiz during the Peninsular War, establishing a parliamentary monarchy in Spain. This constitution represented a significant shift towards liberal governance and individual rights, challenging the absolute monarchy. Its adoption marked a critical moment in Spanish history, influencing subsequent political developments and the struggle for democracy in Spain.

The Spanish Constitution of 1812 inspired liberal and Romantic poets advocating for freedom and social justice. This political shift influenced Hispanic American independence movements, with poets like José Martí using their works to express revolutionary ideals and aspirations.