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How did the jus commune create a shared legal tradition across Europe?
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Civil law
Justinian I, detail of a 6th-century mosaic at the Church of San Vitale, Ravenna, Italy.
The jus commune created a shared legal tradition across Europe by serving as a unified framework of study, training, and discourse that transcended local customs. Following the rediscovery of the Corpus juris civilis in the late 11th century, scholars at universitiesāmost notably the University of Bolognaābegan teaching Roman law alongside canon law.12
This "learned law" provided a common intellectual foundation for European jurists. Its influence spread as students from across the continent flocked to these universities, eventually returning home to apply Roman-canonical principles to local administration. The jus commune fostered unity through several key mechanisms:21
- Rational Procedure: It introduced the Roman-canonical type of procedure, which utilized rational rules of evidence, offering a superior alternative to local, irrational methods like trial by ordeal.1
- Universal Principles: Commentators and jurists sought to derive universal legal principles from Roman texts, applying them to contemporary conditions such as contracts and torts.1
- Shared Discourse: While local laws remained in effect, the jus commune acted as a cohesive system held together by a common tradition and stock of learning, reflecting a shared sense of European civilization.1