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Events on Saturday 1 January 1820 1
1820Liberal revolt forces restoration of Spain's 1812 constitutionRiego's uprising begins the Trienio LiberalColonel Rafael del Riego led an army revolt at Cabezas de San Juan against King Ferdinand VII's absolutist rule. Facing widespread unrest, the king agreed in March to restore the liberal Constitution of 1812, opening a three-year constitutional period.