From the beginnings of the modern state and the centralization of power in the monarchs, the government was exercised by them through people of trust. The monarchs trusted them certain subjects and with which they made daily dispatches to deal with these matters. Over time, these trusted people who, on numerous occasions, received the title of ministers, were in conflict with the powers of other ministers and, to resolve these, they made collective meetings between various ministers and the monarchs. The Spanish monarchy has ruled most of its history —depending on the greater or lesser desire of the monarch to delegate its power— through Councils —Council of Castile, Council of the Indies, Council of Aragon, etc.— whose main tasks were those of to administer justice in the name of the monarchs and to advise the Sovereign in his work of government and with these the polysynodal regime was established.