The judiciary (also known as the judicial sister, judicature, judicial branch or court system) is the system of courts that interprets and applies the law in a country, state or an international community. The first legal systems of the world were set up to allow citizens to settle conflicts without violence.
The term "judiciary" is also used to refer collectively to the personnel, such as judges, magistrates and other adjudicators, who form the core of a judiciary (sometimes referred to as a "bench"), as well as the staffs who keep the system running smoothly. In some countries and jurisdictions, the judicial branch is expanded to include additional public legal professionals and institutions such as prosecutors, state lawyers, ombudsmen, public notaries, judicial police service and legal aid officers. These institutions are sometimes governed by the same judicial administration that governs courts, and in some cases the administration of the judicial branch is also the administering authority for private legal professions such as lawyers and private "notary" offices.
The most important change in this period was the shift from priest to praetor as the head of the judicial system. The praetor would also make an edict in which he would declare new laws or principles for the year he was elected. This edict is also known as praetorian law.
During the late Middle Ages, education started to grow. First education was limited to the monasteries and abbies, but expanded to cathedrals and schools in the city in the 11th century, eventually creating universities. The universities had five faculties: arts, medicine, theology, canon law and Ius Civile, or civil law. Canon law, or ecclesiastical law are laws created by the Pope, head of the Roman Catholic Church. The last form was also called secular law, or Roman law. It was mainly based on the Corpus Iuris Civilis, which had been rediscovered in 1070. Roman law was mainly used for "worldly" affairs, while canon law was used for questions related to the church.
The successors of the Glossators were the Post-Glossators or Commentators. They looked at a subject in a logical and systematic way by writing comments with the texts, treatises and consilia, which are advises given according to the old Roman law.
Around the 15th century a process of reception and acculturation started with both laws. The final product was known as Ius Commune. It was a combination of canon law, which represented the common norms and principles, and Roman law, which were the actual rules and terms. It meant the creation of more legal texts and books and a more systematic way of going through the legal process. In the new legal process, appeal was possible. The process would be partially inquisitorial, where the judge would actively investigate all the evidence before him, but also partially adversarial, where both parties are responsible for finding the evidence to convince the judge.
In common law jurisdictions, courts interpret law; this includes constitutions, statutes, and regulations. They also make law (but in a limited sense, limited to the facts of particular cases) based upon prior case law in areas where the legislature has not made law. For instance, the tort of negligence is not derived from statute law in most common law jurisdictions. The term common law refers to this kind of law. Common law decisions set precedent for all courts to follow. This is sometimes called stare decisis.
In the United States court system, the Supreme Court is the final authority on the interpretation of the federal Constitution and all statutes and regulations created pursuant to it, as well as the constitutionality of the various state laws; in the US federal court system, federal cases are tried in trial courts, known as the US district courts, followed by appellate courts and then the Supreme Court. State courts, which try 98% of litigation, may have different names and organization; trial courts may be called "courts of common plea", appellate courts "superior courts" or "commonwealth courts". The judicial system, whether state or federal, begins with a court of first instance, is appealed to an appellate court, and then ends at the court of last resort.
Justices of the Mexican Supreme Court are appointed by the President of Mexico, and then are approved by the Mexican Senate to serve for a life term. Other justices are appointed by the Supreme Court and serve for six years. Federal courts consist of the 21 magistrates of the Supreme Court, 32 circuit tribunals and 98 district courts. The Supreme Court of Mexico is located in Mexico City. Supreme Court Judges must be of ages 35 to 65 and hold a law degree during the five years preceding their nomination.