The Bases for the Catalan Regional Constitution (in Catalan: Bases per a la Constitució Regional Catalana, Spanish: Bases para la Constitución Regional Catalana), better known as the Manresa Bases (Bases de Manresa), is the document presented as a draft Catalan regional constitution for a paper by the Unió Catalanista to the council of representatives of Catalanist associations, which met in Manresa (Barcelona) on 25 and 27 March 1892 at the initiative of the Regionalist League of Catalonia. The Bases de Manresa are often considered to be the "birth certificate of political Catalanism", at least that of conservative roots.
