The "Siete Partidas" is a comprehensive legal code created in the 13th century under the reign of King Alfonso X of Castile. It consists of seven parts that cover various aspects of law, including civil, criminal, and family matters. This work aimed to unify and standardize legal practices across the diverse regions of Spain. The text is notable for its influence on later legal systems in Spain and Latin America. It combines elements of Roman law and local customs, making it a significant historical document in the development of legal thought in the medieval period.