As strong national monarchies rose in western Europe, this friction became more acute. On one side the royal power was determined to exalt the state and to bring into subjection to it not only the nobles and common people but the clergy as well; the national state must manage absolutely every temporal affair. On the other side, the clergy stoutly defended the special powers that they had long enjoyed in various states and which they believed to be rightly theirs. There were _four_ chief sources of conflict between the temporal and spiritual jurisdictions, (1) Appointments of bishops, abbots, and other high church officers. Inasmuch as these were usually foremost citizens of their native kingdom, holding large estates and actually participating in the conduct of government, the kings frequently claimed the right to dictate their election. On the other hand the popes insisted upon their rights in the matter and often "reserved" to themselves the appointment to certain valuable bishoprics. (2) Taxation of land and other property of the clergy. The clergy insisted that by right they were exempt from taxation and that in practice they had not been taxed since the first public recognition of Christianity in the fourth century. The kings pointed out that the wealth of the clergy and the needs of the state had increased along parallel lines, that the clergy were citizens of the state and should pay a just share for its maintenance. (3) Ecclesiastical courts. For several centuries the Church had maintained its own courts for trying clerical offenders and for hearing certain cases, which nowadays are heard in state courts-- probating of wills, the marriage relations, blasphemy, etc. From these local church courts, the pope insisted that appeals might be taken to the Roman Curia. On their side, the kings were resolved to substitute royal justice for that of both feudal and ecclesiastical courts: they diminished, therefore, the privileges of the local church courts and forbade the taking of appeals to Rome. (4) How far might the pope, as universally acknowledged head of the Church, interfere in the internal affairs of particular states? While the pope claimed to be the sole judge of his own rights and powers, several kings forbade the publication of papal documents within their states or the reception of papal legates unless the royal assent had been vouchsafed. [Sidenote: Royal Restrictions on the Church]