The urban mobs of Paris also mobilised, driven by patriotic fervour and economic hardship, assembling barricades and attacking the infrastructure of Charles X. Within days, the situation escalated beyond the ability of the monarchy to control it. As the Crown moved to shut down liberal periodicals, the radical Parisian masses defended those publications. They also launched attacks against pro-Bourbon presses, and paralysed the coercive apparatus of the monarchy. Seizing the opportunity, the liberals in Parliament began drafting resolutions, complaints, and censures against the king. The king finally abdicated on 30 July 1830. Twenty minutes later, his son, Louis Antoine, Duke of Angoulême, who had nominally succeeded as Louis XIX, also abdicated. The Crown nominally then fell upon the son of Louis Antoine's younger brother, Charles X's grandson, who was in line to become Henri V. However, the newly empowered Chamber of Deputies declared the throne vacant, and on 9 August, elevated Louis-Philippe, to the throne. Thus, the July Monarchy began.