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The legal systems prevailing in the world can vary widely based on each country's unique history and culture. Common types include civil law, common law, religious law, customary law, and mixed legal systems. These legal systems govern the structure and operation of courts, the allocation of rights and responsibilities, and the enforcement of laws within a specific jurisdiction.
The adversarial system of justice involves two opposing parties presenting their cases to a neutral judge or jury, with each side responsible for gathering and presenting evidence. In contrast, the inquisitorial system relies on the judge or a panel of judges to actively investigate and gather evidence to determine the truth. The adversarial system is more common in common law countries like the United States, while the inquisitorial system is prevalent in civil law countries like France and Germany.
The Mexican legal system is a descendant of the old Napoleonic Code brought over from France and Spain during colonization. The two major legal traditions which are the basis of law in most countries today are generally classified as Civil Law and Common Law. Civil Law is a descendant of the Roman Laws developed under the auspices of the Emperor Justinian. The European countries tended to develop their legal systems following the more codified Civil Law, while England adopted precedents following local customs and practices which developed into what is known today as the British Common Law. As these countries colonized and expanded their respective territories, they transplanted their system of Laws. The United States and Canada follow the British Common Law, and Mexico follows the Civil Law. Obviously, this explanation is an oversimplification made by me, a layman, and intended for the edification of other layman; not for the legal scholar.
The United States has a two-party system.
The two types of law are common and statutory.
The judge has a passive role in the adversary system and an active one in the inquisitorial. The counsel has an active role in the adversary and a passive role in the inquisitorial. In adversary, the burden of proof rests on the accuser whereas in the inquisitorial the burden of proof rests on noone. Adversary systems can have juries.
The two most common party systems in English-speaking countries are the two-party system, where two major parties dominate the political landscape (e.g., Democrats and Republicans in the U.S., Conservatives and Labour in the UK), and the multi-party system, where several parties compete for power and representation (e.g., Canada, Australia).
Statute law and common law are the two types of laws in Australia. Statute law refers to the legislation passed in parliament. Upon approval by parliament, statute law becomes common law. Common law emanates from the judiciary, and they are laws passed by juries and judges.
Common law can either be case law that interprets legislative statutes, or it can be case law that is only based on principles from prior case law.
English common law & the Roman Civil law
Adversarial is an adjective that means characterizing or involving opposition or conflict. In law it refers to a scenario whereby the parties in a given dispute have the responsibility of finding and presenting evidence.