What is the legal system that relies on past judicial decisions and statutes?

The legal system that relies on past judicial decisions and statutes is common law. Common law is characterized by the doctrine of stare decisis, which means that courts are bound to follow the precedents set by previous rulings in similar cases. This creates a consistent and predictable legal framework, as judges interpret and apply established laws based on earlier decisions.

In contrast, civil law systems rely more heavily on codified statutes and legal codes, with less emphasis on judicial decisions. Religious law, on the other hand, is based on religious texts and doctrines, while social law typically refers to legal principles governing societal relations that may not fit neatly into established categories like those above. Common law's reliance on history and interpretation is what sets it apart and gives it a unique role in the legal landscape.