Mounted Tourist-Police officers in Petra, Jordan. A police officer (also known as a policeman or police agent in some forces, particularly in the United Kingdom and other Commonwealth nations) is a warranted law employee of a police force.olice officers in nearly all countries retain their lawful powers while off duty. In the majority of Western legal systems, the major role of the police is to maintain order, keeping the peace through surveillance of the public, and the subsequent reporting and apprehension of suspected violators of the law.
The development of democracy in England. Juries and common law - Williams successor was King Henry, considered to be one of the most gifted statesmen of the 12th century. - King Henry developed Jury Trial as a means of administering royal justice. - This included the judge and jury of peers in the judicial process.
A court's authority to examine an executive or legislative act and to invalidate that act if it is contrary to constitutional principles. The power of courts of law to review the actions of the executive and legislative branches is called judicial review. Though judicial review is usually associated with the U.S. Supreme Court, which has ultimate judicial authority, it is a power possessed by most federal and state courts of law in the United States. The concept is an American invention.