 Complete the following phrase:  The years of political struggle between the conservative authoritarian absolutists and the progressive constitutionalist Liberals over the issue of royal succession, lasting from 1828 to 1834, was a complex period in Lisbons history. In 1828, Prince Michael, whom the absolutists wanted to rule Portugal as an absolute monarch, returned from exile in Vienna. Conservative politicians, clergymen and aristocratic supporters of Queen Carlota manipulated political developments and proclaimed him king, starting a 