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Nonetheless , composed for the most part of the two mesetas of Castilla la Vieja and Castilla la Nueva , its disposable wealth from agriculture in all likelihood was less than that from any one of the single taifas of Zaragoza , Valencia , or Sevilla . Such hopes were usually vain in the history of the medieval monarchy unless another member of the royal dynasty could be enlisted to give them legitimacy . Certainly , unless he were very enlightened indeed or almost totally dependent on their support , al-Qadir would not have cared to have them complicate his own negotiations with Alfonso on behalf of himself and of the Muslim majority . The third was the political skill to reconcile and channel the energies and ambitions of the kingdom he already ruled so as to allow the concentration of its resources for the conquest of a new one . The students ' protest resulted in the Supreme Court 's 1969 ruling in Tinker v. Des Moines Independent Community School District that students " do not shed their constitutional rights to freedom of expression at the schoolhouse gate " and that students can express themselves freely unless their actions caused a substantial disruption of the educational environment . Conditions propitious for a revolt may have existed in Galicia from the late fall of 1086 if , as suggested above , the defeat of Alfonso VI at Zalaca also involved the death in battle of major figures in the ecclesiastical and secular hierarchy of the region . Not only had they constantly added their status to the authority of the royal charters from the very initiation of the reign but their own proper charters , extended throughout the same period , show the king 's dowager sisters as the possessors of very considerable portions of the dynastic fisc and able to alienate it by their own right . Papal policy during the early part of this period seems to have been aimed at maintaining some kind of balance and adjudicating the claims of the rivals , but both the ecclesiastical and political dynamics in the Iberian peninsula proved too strong to be moderated by a distant and intermittent authority , however exalted . In addition to the ecclesiastical business this curia transacted , it also doubtless saw the coordination of plans for a series of moves designed to realize the possibilities afforded by the fall of Toledo . The dynastic or fisc lands of the realengo ordinarily furnished the sinews of government . The nucleus of the curia itself , the dynastic family , experienced the demise of Queen Constance at the end of 1093 and the accession of Queen Berta at the end of 1094 .