The death of the great emperor brought this realm into utter confusion, the whole fabric of his wise and firm administration falling to pieces. All the heterogeneous and often refractory elements which his stern rule had kept in check burst their bounds and gained full play during the reigns of his descendants, who grew weaker and weaker, though with here and there an exception. The pretensions of the Church, which Charlemagne's own protection and fostering care had, so to speak, ushered in and strengthened; the struggles of eminent families and dynastic houses for sovereignty in the absence of one central and undisputed power; the increase of the immunities and the growth of feudalism--all these were serious difficulties for the coming rulers to cope with. Louis the Pious, the only surviving son of Charlemagne, and heir to his crown, was clearly quite unfit to cope with these difficulties satisfactorily. The untimely distribution of the crown lands insisted on by the imperious Judith, his second wife, in favour of her own son, and the protracted struggles between the imperial princes, steeped the realm in intestine wars, and in the end led to its dissolution. It is impossible in this short sketch to follow to his tragical end this unworthy son of a great father. The treaty of Verdun (843) settled the bloody conflicts, but split the empire into three new dominions; the East Frankish realm devolving on Louis the German: the West Frankish kingdom falling to Charles the Bald; and the middle district, including Italy and the strip of land between the two first divisions just mentioned, and comprising Provence, Burgundy, Lorraine, and the Netherlands. This last realm fell to Lothair. The treaty of Verdun, to which the French and German States trace their origin, also effected the most sweeping changes in Helvetia, and altered greatly its political aspect. The country was rent into two halves, East Switzerland, forming the Aare, with Chur-Rhætia, being incorporated with the East Frankish kingdom; and West Helvetia and the Valais with Lorraine or the middle kingdom. This naturally tended to revive the national antagonism between the two Helvetias.