This vassality of Marca Hispanica and Navarre to the Frankish empire remained effective up to 985. At that point, because his armies were mobilized in the Verdum's county, Lothair of France and his Byzantine allies did not assist Navarre &amp; Marca Hispanica in its defense against the Caliph, implying that they failed to defend Barcelona from the Arabs. Almanzor did not stay in the cities (the first assault was launched 6 July 985; withdrew their troops 23 July), but this incursion was arguably the first step of a process of independence of the county of Barcelona from the kingdom of France, and heralded what would become the Aragon kingdom. While independent of France and integrated in the Crown of Aragon, Barcelona remained legally a county of France and the King of France retained a "de jure" right to vote in the Barcelone Courts in the next centuries. This situation generated numerous territorial conflicts between the two kingdoms to control what is now the south of France and the north of Spain (the support of Aragon to the Count of Toulouse, death in Perpignan of Philip III of France married to Isabel of Aragon, and Albigenses Crusades are some of the most famous examples) and played a significant political role in the start of the Catalan Revolt which ended with the treaty of Pyrenees.