Greco roman contributions to western legal traditions?

Specifically, the so-called civil law countries are heavily influenced by the Roman legal tradition (also known as ius commune). In fact, all European civil codes were heavily influenced by Roman law. This holds particularly true for systems in countries such as France, Spain, or Italy. This is also the reason why latin is featured so much in legal literature.

To name some examples of Roman contributions, much of contract law is based upon Roman norms. Concepts such as pacta sunt servanda (specific enforcement) hark back to Roman times.

Greek legal tradition also plays a role, however mostly in an indirect sense, since the Romans themselves already adopted a number of Greek concepts. One example is the long-term, sometimes indefinite lease of land, a concept known in Greek as emphytheusis. This originally Greek concept has, for instance, been adopted in the Dutch Civil Code (Burgerlijk Wetboek).

Though the influence of Greek and Roman legal traditions on common law countries, such as England and the US, is less pronounced, it has impacted these systems as well. The foundations of Common Law, laid down when the Normans conquered England in the 11th Century, were based upon old French law, which in turn featured elements of Roman law. Therefore, common law also features a lot of Latin terminology ranging from procedural law (locus standi), over conflict of laws (lex rei sitae, lex causae) to tort law (dolus eventualis, volenti non fit injuria, etc.).