The law is a system of rules, usually enforced through a range of institutions. This form of politics, economy and society in different ways, and serves as a major mediator of social relationships between people. Contract law regulates everything to buy a bus ticket to trading in derivatives markets. Property law that defines rights and obligations and the transfer of the title itself and real estate. Trust law applies to held for investment, and financial security, while the law allows claims for compensation for damage to the rights of persons or property is damaged. If injury is a criminal offense is a law that provides state criminal offender is held responsible. Constitutional Law provides the framework for the development of law, human rights and the election of political representatives. Administrative law is used to review the decisions of government agencies, while international law regulates affairs mainly between countries, activities ranging from trade, environmental regulation or military action. Write in 350 BC, the Greek philosopher Aristotle declared, "The rule of law is better than the rule of law, no person."

Legal rights and obligation to work in different ways. In general, the difference between the power of civil law, which codified the laws and common law system where the judge made a law is not adopted. In some countries, religion is still right to inform. The Act provides a wealth of scientific research, legal history, philosophy, sociology, or economic analysis. The law also raises important and complex issues of justice, goodness and justice. "In its majestic equality", said the author Anatole France in 1894, "the law forbids rich and poor to sleep under bridges, to beg in the streets, and to steal bread." In a typical democracy, the central authority, and the interpretation of law is the creation of three main branches of government, namely an impartial judiciary, a democratic congress and responsible leadership. Implement and enforce the law and provide public service in government bureaucracy, army and police is very important. While all organs of state are creatures created and tied by the law, lawyers, independent and vibrant civil society inform and support their development.

All legal systems deal with the same basic questions, but each country classifies and describes the legal issues in different ways. The overall difference between "public" (a term closely related to the country, including constitutional, administrative and criminal law) and "private" (which includes contracts, and damage property). Civil law system, the contract and damage to part of a general law of obligations, but hope to resolve the legal procedures for law or international conventions. International, constitutional and administrative law, criminal law, contractual law, property law and trusts are the traditional core subjects ", although there are many other places, which may be more practical importance.

       * Public international law concerns relationships between sovereign nations. Sources of public international law was created for the development of, practices and treaties between sovereign nations, such as the Geneva Conventions. Public international law was developed by international organizations like United Nations (which was set up after the failed League of Nations to prevent World War II), the International Labor Organization, the World Trade Organization and the International Money Fund. Public international law have a special status, which is entitled, since no international police force and courts (eg the International Court of Justice of the principal United Nations judicial organ) is no ability to punish disobedience. However, some institutions like the WTO, have effective systems for binding arbitration and dispute resolution support to strengthen the trade.

       * Conflict of Laws (Private International Law or "civil law countries) concerns which jurisdiction a legal dispute with private parties should be heard by the law and the law should apply. Today, the businesses are increasingly so moving capital and labor supply chains across borders, as well as foreign trade business. More and more companies to choose in accordance with commercial arbitration in New York in 1958

       * By law the European Union is the first and so far the only example of a supranational legal framework. For trend of increasing global economic integration, many regional agreements, especially the European Union, the United Nations in South-move followed the same pattern. EU, sovereign nations nakakalap of their powers the court system and political institutions. The institutions are allowed to enforce laws and regulations, or by both Member States and of citizens in a way that is not possible through an international public law. As the Court said in 1960, the law of the European Union is a "new legal order of international law," the mutual social and economic benefits to the Member States.