The Cortes of León were a series of legislative assemblies in the Kingdom of León, which played a crucial role in the development of medieval Spanish governance. Established in the 11th century, these assemblies brought together representatives from various social classes, including nobles, clergy, and commoners, to discuss and decide on important matters such as taxation and law. These early Cortes are significant for their contribution to the evolution of parliamentary systems in Spain. They laid the groundwork for future legislative bodies, influencing the political landscape and promoting the idea of collective decision-making in governance.