Original sentence: The European powers monitored three years of factional struggles in Spain, where Ferdinand VII refused to restore the liberal Spanish Constitution of 1812 and had faced a revolution since 1820, led by the constitutionalist and patriot Rafael del Riego y Nunez (1785-1823).The ministers' monarchic governments were alarmed by the capture of  Ferdinand VII of Spain by armed revolutionary liberals opposed to absolutism, who sought a constitutional monarchy for Spain by restoring the abrogated Constitution of 1812
Edited sentence: The European powers monitored three years of factional struggles in Spain, where Ferdinand VII refused to restore the liberal Spanish Constitution of 1812 and had faced a revolution since 1820, led by Rafael del Riego y Nunez (1785-1823).The ministers' monarchic governments were alarmed by the capture of  Ferdinand VII of Spain by armed revolutionary liberals opposed to absolutism, who sought a constitutional monarchy for Spain