To think about the beginnings of the liberal revolution whose first pronouncement took place in Porto, on August 24, 1820, later propagated to other cities in the Kingdom and to Lisbon, whose bicentenary is celebrated this year, there is a tripartite division into “structure”, “conjuncture” (national and international) and “event” (rupture of the established order), in New History perspective (Furet; Le Goff, 1978: 550). This allows for a comprehensive and integrated view of the complex socio-historical process that led to the implantation of liberalism in the western extreme of Europe and inaugurated the first Portuguese parliamentary and constitutional political regime, matrix of our democratic system.
–